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Hello and welcome to the One Show with Alex Jones. And for the second | :00:18. | :00:24. | |
tonight, aren't either lucky girl, Mister Matt Allwright will be here. | :00:25. | :00:32. | |
Not a sarcastic as it was meant to sound. Thank goodness to come | :00:33. | :00:37. | |
between us tonight, a man known for his mix of music and politics who, | :00:38. | :00:42. | |
like myself, has a penchant for a pearl-snap shirt. And says he is | :00:43. | :00:46. | |
turning into a radical Kenny Rogers. It is Billy Bragg. Great to be here. | :00:47. | :00:54. | |
So the pearl-snap shirt, is this a shift of emphasis are you? Some of | :00:55. | :01:00. | |
your critics say you are becoming a country singer. Country is going too | :01:01. | :01:04. | |
far, I think I could get away with what is called Americana, which is | :01:05. | :01:11. | |
country music for people who like the Smiths. Guitar like Johnny Marr. | :01:12. | :01:21. | |
I know I haven't got my pearl-snap shirt on, which is a disappointment, | :01:22. | :01:25. | |
but two things. I just got back from a tour of Australia and New | :01:26. | :01:30. | |
Zealand, so the good ones are at the cleaners and secondly, I wore one on | :01:31. | :01:33. | |
Question Time last Thursday and I thought people would think I only | :01:34. | :01:38. | |
have one shirt. Interesting you should mention Question Time, | :01:39. | :01:42. | |
because this September, the referendum on Scottish independence | :01:43. | :01:45. | |
takes place and it will be the first time in UK that 16 and 17-year-olds | :01:46. | :01:49. | |
will be allowed to go to the ballot box. Justin Rowlatt has been to | :01:50. | :01:53. | |
Glasgow to meet some of those gearing up for their very first | :01:54. | :01:58. | |
vote. On September the 18th, voters in | :01:59. | :02:01. | |
Scotland will be asked a straight yes or no question. Should Scotland | :02:02. | :02:06. | |
become an independent country? Any change will be permanent, so perhaps | :02:07. | :02:11. | |
those who have most to win or lose the 16 and 17-year-olds who will be | :02:12. | :02:15. | |
voting for the first time. So how are they weighing things up? | :02:16. | :02:21. | |
Are you guys ready to vote Chris Rock are you beginning to feel the | :02:22. | :02:28. | |
passion and delete pressure? I am feeling the pressure, candidates are | :02:29. | :02:31. | |
just arguing and not telling us what we need to know. We have delivered | :02:32. | :02:35. | |
the decision for many years to come and we can't complain if we don't | :02:36. | :02:40. | |
engage properly when making them. We have invited members from both yes | :02:41. | :02:45. | |
and no camps to speak to our members. First up, Blair Jenkins, | :02:46. | :02:51. | |
representing Yes Scotland. If we vote for independence, will there be | :02:52. | :02:56. | |
a cultural divide? I don't think so. By and large, this debate has been | :02:57. | :03:02. | |
conducted in a friendly way. I have friends who are on the other side of | :03:03. | :03:05. | |
the debate and they will be friends when it is over. It is a temporary | :03:06. | :03:10. | |
disagreement and we will be fine. We are in the financial district, does | :03:11. | :03:15. | |
anyone have any questions about the economics of independence? Where are | :03:16. | :03:18. | |
the areas in the case of independence where we will see tax | :03:19. | :03:22. | |
rises? There will only be tax rises if that is what people vote for. | :03:23. | :03:26. | |
There is a general distrust of politicians at Westminster. One of | :03:27. | :03:31. | |
the things a Scottish Government that is independent has to do, | :03:32. | :03:34. | |
whoever wins the first election, is build up trust with the Scottish | :03:35. | :03:41. | |
people. So we are outside the famous Glasgow University. I think you have | :03:42. | :03:48. | |
a question about tuition fees? How well an independent Scotland be able | :03:49. | :03:53. | |
to cope in the long run with free tuition? I think not having tuition | :03:54. | :03:57. | |
fees in Scotland is one of the best things we have done, since we were | :03:58. | :04:00. | |
able to take our own decisions in relation to education and I wish the | :04:01. | :04:05. | |
rest of the UK had the same policy. Unfortunately they don't and tuition | :04:06. | :04:08. | |
fees in England are in some cases more than ?9,000 a year. We are very | :04:09. | :04:16. | |
fortunate, there is no country that has become independent in the last | :04:17. | :04:19. | |
100 years that has become independent in such benevolent | :04:20. | :04:20. | |
circumstances. If you look around Europe, most of the country is doing | :04:21. | :04:23. | |
really well are small countries and it seems to be something to do with | :04:24. | :04:27. | |
having the ability to focus, take a really good strategic view of what | :04:28. | :04:31. | |
is important in your economy and develop those things. That is what | :04:32. | :04:34. | |
the wealthiest countries in Europe, by and large, have a similar | :04:35. | :04:39. | |
population to Scotland. Now it is the turn Blair McDougall, | :04:40. | :04:42. | |
representing the better together campaign. He is setting sail on the | :04:43. | :04:46. | |
River Clyde and hoping to convince our young voters that know is the | :04:47. | :04:53. | |
answer. Since the 1940s, the Scottish vote hasn't changed, | :04:54. | :04:58. | |
whoever has ruled them. I think the best step towards that would be one | :04:59. | :05:02. | |
voice in five and a half million, rather than 62 in half a million. | :05:03. | :05:06. | |
Surely we will Bill be able to change the things we want to change | :05:07. | :05:11. | |
and vote for the Government we want --we will be able? We already have | :05:12. | :05:16. | |
more power is coming to the Scottish parliament, more decision making, | :05:17. | :05:19. | |
but we have the back-up of being part of something bigger. Last | :05:20. | :05:22. | |
year, the drop in the amount of money coming from North Sea oil cuts | :05:23. | :05:26. | |
in one year is the equivalent of the budget for every single school in | :05:27. | :05:29. | |
Scotland for one year. We didn't need to make those cuts because we | :05:30. | :05:33. | |
are part of the United Kingdom and have that stability. How could the | :05:34. | :05:37. | |
Scottish economy come first when we are such a small part of the United | :05:38. | :05:42. | |
Kingdom? Many of the things we are great at our invested in from the | :05:43. | :05:45. | |
rest of the UK. We are going past shipyards, where there are thousands | :05:46. | :05:50. | |
of jobs, where the only customer for that is the Royal Navy, we have just | :05:51. | :05:54. | |
built the biggest chip in its history, the financial services | :05:55. | :05:59. | |
sector, many of the other parts are in other parts of the UK, so the | :06:00. | :06:05. | |
idea of us -- is specialising in the things we are at. The No Campaign | :06:06. | :06:10. | |
wants to continue with free education but the Better Together | :06:11. | :06:21. | |
campaign says they were charges. If the rest of the people in the UK are | :06:22. | :06:25. | |
suddenly from a foreign country, they would qualify for free | :06:26. | :06:29. | |
education in Scotland as well. It is a question of whether it continues | :06:30. | :06:33. | |
to be affordable. Back on dry land, how do the young voters feel about | :06:34. | :06:38. | |
casting their vote? There is a lot of pressure on us, it needs to be | :06:39. | :06:43. | |
there, you need to involve 16 and 17-year-olds in the political | :06:44. | :06:45. | |
system, it is the only way you get people to engage. | :06:46. | :06:52. | |
It is good pressure, isn't it? It is a big decision. Billy, you have | :06:53. | :06:56. | |
always worked to get young people involved in politics, but | :06:57. | :06:59. | |
16-year-olds, they can vary a lot in maturity and understanding. Is it | :07:00. | :07:04. | |
too early? We allow people to leave school at 16 so we must be accepting | :07:05. | :07:08. | |
they are ready to go into the wider world. If you are in work, paying | :07:09. | :07:13. | |
taxes, you can join the Army at 16, I think it seems wrong for people | :07:14. | :07:17. | |
not to be represented. I am not a very good advert, to be honest. The | :07:18. | :07:20. | |
first time I had the opportunity to vote, I didn't, because I was a punk | :07:21. | :07:27. | |
rocker. That is surprising. And Margaret Thatcher got elected. I am | :07:28. | :07:31. | |
not a great advert. Part of the problem was I didn't really | :07:32. | :07:34. | |
understand it and if we are going to have votes for 16-year-olds, we need | :07:35. | :07:39. | |
much more civic education at school, so people understand how it works. I | :07:40. | :07:42. | |
know there are city classes now but from what I understand from my | :07:43. | :07:45. | |
nephews and nieces, they don't engage. They will have their say in | :07:46. | :07:51. | |
September. Now, let's have a treat from the Billy Bragg catalogue. | :07:52. | :08:00. | |
# I loved you then as I love you still. | :08:01. | :08:04. | |
# You put me on the pedestal, which on the pill. | :08:05. | :08:09. | |
# Some feel bad about letting you go. | :08:10. | :08:14. | |
# I don't want to change the world # I'm not looking for A New England | :08:15. | :08:20. | |
# I'm just looking for another girl. # I don't want to change the world | :08:21. | :08:24. | |
# I'm not looking for A New England # I'm just looking for another | :08:25. | :08:30. | |
girl. Great song. Bettis from your DVD, | :08:31. | :08:40. | |
live at the Union Chapel. You describe yourself as a lapsed | :08:41. | :08:43. | |
atheist, is it comfortable playing in a church? It is a lovely geek to | :08:44. | :08:48. | |
play, you can see from the sleeve of the DVD, it is lovely. That's what a | :08:49. | :08:52. | |
lovely show. Sometimes, churches have a weird effect on the audience, | :08:53. | :08:56. | |
I think it is sitting on pews X mark I have been known to preach as well | :08:57. | :09:03. | |
from the stage. The great thing is, everyone can hear you when you | :09:04. | :09:07. | |
speak, the sightlines are really great and it is a really special | :09:08. | :09:13. | |
place. Everyone knows. That particular gig is a really nice one. | :09:14. | :09:16. | |
You don't have people talking at the bar, trying to get together at the | :09:17. | :09:22. | |
bar, meeting other people, to have a relationship with, and you can't be | :09:23. | :09:25. | |
telling them to shut up. You don't have that in the union Greg | :09:26. | :09:30. | |
Chappell. And great acoustics. You have been with the band with a year. | :09:31. | :09:39. | |
How does it compare being delayed to being a solo artist? There are more | :09:40. | :09:44. | |
people to carry your guitars around. I have had a lot of fun with | :09:45. | :09:48. | |
the guys, it is more interesting for me as a musician because I can throw | :09:49. | :09:53. | |
songs at the band and we can learn all songs of mine, we play A New | :09:54. | :09:56. | |
England now as a band, as an ensemble, and it sounds a bit like | :09:57. | :10:04. | |
Kraftwerk. You are on the road later in the year, is that with the band? | :10:05. | :10:10. | |
Some of them are. Latitude, I will be with the band, Glastonbury I am | :10:11. | :10:15. | |
on my own. And you are one extreme to the other, you did Sydney Opera | :10:16. | :10:18. | |
House and you are doing a very different one on Saturday, very | :10:19. | :10:23. | |
small. I am doing a record shop in the room called Raves From The | :10:24. | :10:29. | |
Grave. It is international record store Day on Saturday, artist go | :10:30. | :10:33. | |
around to celebrate the few record stores that are around. And we have | :10:34. | :10:38. | |
a treat at the end of the show, you will be singing us out. Now, the | :10:39. | :10:42. | |
parenting site Mumsnet announced yesterday they had been hacked, the | :10:43. | :10:47. | |
attackers had exploited the recent heartbleed bug, meaning the | :10:48. | :10:49. | |
subscribers to the site are being advised to change their passwords. | :10:50. | :10:56. | |
More about the heartbleed bug later. But what makes a successful | :10:57. | :11:00. | |
password? A minimum of eight characters, our mixture of capital | :11:01. | :11:06. | |
and small letters, numbers and symbols. Like this one, The1sh0w!. | :11:07. | :11:11. | |
Is that your current password? Speak ever used to be. | :11:12. | :11:17. | |
In the past, to keep your possessions safe was a big metal | :11:18. | :11:22. | |
safe and decay. But in this modern digital age, to keep your money | :11:23. | :11:27. | |
secure, your correspondence private and to keep those embarrassing | :11:28. | :11:30. | |
pictures out of sight, you need a password. And not just one, today's | :11:31. | :11:38. | |
internet user, on average, has 26 different sites, each requiring a | :11:39. | :11:45. | |
password. Very recently, the heartbleed bug threatened internet | :11:46. | :11:52. | |
security worldwide, shocking internet giants. Doctor Jessica | :11:53. | :11:55. | |
Barker tells me what it takes to make a password more secure. | :11:56. | :12:00. | |
Anything that is known about you, anything you talk about or tweet | :12:01. | :12:03. | |
about is something you want to avoid. And anything is easy to | :12:04. | :12:07. | |
guess, so dictionary words are red. Lots of people use them, so they are | :12:08. | :12:11. | |
very obvious, but there password cracking tools that can crack 1 | :12:12. | :12:17. | |
million passwords per second. 1 million per second? Should we have a | :12:18. | :12:21. | |
different password for every site? Absolutely, if one gets stolen, the | :12:22. | :12:26. | |
rest of your accounts are safe. So, in an ideal world, to make our | :12:27. | :12:30. | |
online experience as safe as possible, we have to remember | :12:31. | :12:33. | |
numerous passwords that cannot be cracked. | :12:34. | :12:40. | |
But that is easier said than done. But it is not just me that is having | :12:41. | :12:45. | |
a nightmare with this, is it? How many do you have? Goodness me, | :12:46. | :12:57. | |
with work, 60, maybe? 60? Easily. How can anyone remember 60? When you | :12:58. | :13:02. | |
are asked for a password, you always put the one for another site and | :13:03. | :13:07. | |
even then, you are not the wiser. If you write them down, someone could | :13:08. | :13:13. | |
find them. What I do, I don't project which site it is. Can you | :13:14. | :13:21. | |
then remember? No. Is yours unique? Why would they want to crack into | :13:22. | :13:25. | |
it? To steal money from your account. They put in the monkey one, | :13:26. | :13:31. | |
two, three, until it is right. Is it "monkey" ? You are close. | :13:32. | :13:39. | |
Our inability to remember, Mexican city was to be holding us back from | :13:40. | :13:44. | |
the expert advice, so I have come to meet Mr Memory. I need passwords I | :13:45. | :13:53. | |
can remember. My favourite password is One Show. You need imagery and | :13:54. | :14:00. | |
associations, virtual memory needs, like a paintbrush. It is a visual | :14:01. | :14:04. | |
image, rather than the actual number. I then need the letter S. It | :14:05. | :14:11. | |
will be this. It begins with the S, it is a swan. How do I put them | :14:12. | :14:19. | |
together? You have to have links that tell a story. I am painting a | :14:20. | :14:24. | |
picture with my paintbrush, but goodness, this one is blown out of | :14:25. | :14:29. | |
the water by an H-bomb that has landed, I need comfort food, a | :14:30. | :14:34. | |
doughnut. Having eaten the doughnut, I am afraid a visit to the WC is | :14:35. | :14:41. | |
called for. You have done it, you have solved my problem is! | :14:42. | :14:46. | |
Problem-solving I will be remembering all of my passwords from | :14:47. | :14:50. | |
now on in. Now where did I put the key? He is really on his own. The | :14:51. | :15:00. | |
thing that started the panic was this Heartbleed bug. Can you explain | :15:01. | :15:06. | |
Mr Mark I shall try. This is basically a major flaw in a security | :15:07. | :15:10. | |
software system. It is a dominant system. It is called SSL. If you see | :15:11. | :15:17. | |
a little padlock in your browser of the site, that means it's a version | :15:18. | :15:24. | |
of SS L. What happens is when you are on a website, behind-the-scenes | :15:25. | :15:27. | |
there's a handshake going on between the site and your computer, back and | :15:28. | :15:31. | |
forth with your information, keeping the lines of communication open. | :15:32. | :15:37. | |
That is called the Heartbleed. This Heartbleed is the floor where | :15:38. | :15:40. | |
potentially a hacker could reach in and grab the data, so the security | :15:41. | :15:46. | |
system isn't working. But you see that padlock on an awful lot of | :15:47. | :15:51. | |
sites, so a lot have been affected will stop Bethink up to half a | :15:52. | :15:53. | |
million trusted servers have been affected, big and small sites. | :15:54. | :15:59. | |
Facebook, Yahoo, Google, that sort of thing. It's a real mixture of | :16:00. | :16:07. | |
sites. Do we change our passwords? The message is pretty confusing. | :16:08. | :16:13. | |
Google say no, they detected early. Facebook and Yahoo say don't do it | :16:14. | :16:17. | |
because of this but because it's a good thing to do every now and | :16:18. | :16:20. | |
again. The thing to do is to check to see if the sites you used have | :16:21. | :16:26. | |
been fixed, patched is the text speak for that. We have a link on | :16:27. | :16:30. | |
our website to websites that are there, so you can type in a website | :16:31. | :16:34. | |
and it will tell you whether it has been patched or not. There's no | :16:35. | :16:38. | |
point in resetting the password if the site has not been patched | :16:39. | :16:43. | |
because it still vulnerable. There's always a risk, some people start | :16:44. | :16:48. | |
phishing, use it as an excuse to get at you. There will now be a whole | :16:49. | :16:53. | |
spate of e-mails suggesting there's something wrong with your password, | :16:54. | :16:58. | |
reset it, send them the details. Do it via the official channels. Last | :16:59. | :17:06. | |
week, plans were announced for the phased closure of two Britain's deep | :17:07. | :17:12. | |
pit coal mines, Kellingley in North Yorkshire and Thoresby in | :17:13. | :17:14. | |
Nottinghamshire. This inevitably means job losses. Whilst the | :17:15. | :17:19. | |
communities they consider the future, Alex has been there to | :17:20. | :17:24. | |
Ammanford, where she grew up, to talk to people about their memories | :17:25. | :17:33. | |
of the miners' strike, 30 years ago. This is where I grew up in south | :17:34. | :17:38. | |
Wales and when I was little it was an area dominated by mining. So this | :17:39. | :17:43. | |
is a man valley. Ammanford is right here. Here is where the colliery | :17:44. | :17:49. | |
used to be. Over there now it has been turned into a housing estate. | :17:50. | :17:53. | |
If you look across the whole valley, there's hardly any signs of the | :17:54. | :18:02. | |
mining industry at all. On every single working miner to stop work | :18:03. | :18:08. | |
and join this... I was seven when the miners' strike started and more | :18:09. | :18:13. | |
watch 1984. I now know as an adult the hardship it brought to pit | :18:14. | :18:16. | |
communities from South Wales to Scotland. But as a child, my | :18:17. | :18:22. | |
recollections are patchy. One of the things I do remember is being on a | :18:23. | :18:27. | |
school trip to Tenby. It was all the doubts that had brought the children | :18:28. | :18:30. | |
instead of the mums. At the time, this meant nothing to me because my | :18:31. | :18:37. | |
dad wasn't a minor. Aled and I grew up on the same street, and his | :18:38. | :18:41. | |
father was a minor on strike. We were young children back in 84, 85. | :18:42. | :18:49. | |
I remember very clearly you and your brother would come over in the | :18:50. | :18:52. | |
morning because you'd have a lift with us to school in our orange | :18:53. | :18:57. | |
camper van. But I don't think any of us realised that was happening, | :18:58. | :19:01. | |
because your family couldn't run a car. We thought it was just | :19:02. | :19:05. | |
convenience more than anything else. I just thought we were having lived | :19:06. | :19:09. | |
with you because you had the biggest car, so you could accommodate all | :19:10. | :19:14. | |
the kids nearby and takers in the minibus. Can you remember how the | :19:15. | :19:19. | |
strike impacted you as a family? I remember dad being home a lot, not | :19:20. | :19:24. | |
being able to afford food really, relying on hand-outs from family and | :19:25. | :19:29. | |
friends. One Christmas they couldn't even afford Christmas presents for | :19:30. | :19:34. | |
us. We have to come down to the welfare here and pick up a Christmas | :19:35. | :19:37. | |
hamper, just so we could have Christmas. In 1984, there were more | :19:38. | :19:43. | |
than 20,000 men employed in the South Wales coalfields. More than | :19:44. | :19:48. | |
500 of them lived in my hometown of Ammanford. With nearly all the men | :19:49. | :19:52. | |
on strike, the women became the backbone of the community. Gian | :19:53. | :19:56. | |
Graham and her husband, Alan, remember it well. Tell me, what was | :19:57. | :20:01. | |
it like being a minor's wife during that time? I was the one that was | :20:02. | :20:07. | |
working. My money went to pay the mortgage. But we were very fortunate | :20:08. | :20:12. | |
that I was working. A lot of people lost their homes. You were one of | :20:13. | :20:16. | |
the flying pickets, Alan. Your job was to dissuade the miners from | :20:17. | :20:20. | |
breaking the strike. Not just locally, you went across the | :20:21. | :20:26. | |
country. We went up as far as Coventry. We were in Brixton. We | :20:27. | :20:32. | |
were there for a whole year. Other people in Brixton were marvellous to | :20:33. | :20:36. | |
us. We had stalls in the market, everybody selling. Then the other | :20:37. | :20:47. | |
boys would go round collecting. The people of the colleges were putting | :20:48. | :20:54. | |
us up. They would give you their last bit of food. They were really | :20:55. | :20:59. | |
supportive. In the centre of Ammanford there's a place that | :21:00. | :21:03. | |
became a lifeline for many of the mining families. So how important | :21:04. | :21:08. | |
was the welfare hall to the community at that time? These sort | :21:09. | :21:16. | |
of facilities, built by the mining community for the miners, became | :21:17. | :21:20. | |
versatile for feeding them during these terrible times. As the strike | :21:21. | :21:26. | |
progressed, we work shelling out food parcels, carrying out | :21:27. | :21:29. | |
collections throughout the country. We had children starving, family | :21:30. | :21:39. | |
stopping. A year later in 1985, after one of the longest strikes in | :21:40. | :21:44. | |
our industrial history, the miners returned to work defeated but not | :21:45. | :21:48. | |
broken. It was really important for me to come back and learn about the | :21:49. | :21:52. | |
bitter disputes that were raging while I was growing up here. The | :21:53. | :21:57. | |
miners' strike of 84 will always be remembered. It has left its mark on | :21:58. | :22:01. | |
the town. Even though the pits are long gone. As we were watching | :22:02. | :22:06. | |
that, it's incredible, it's part of both of our childhoods. It's | :22:07. | :22:11. | |
fascinating, I was just seven at the time. When he was talking about the | :22:12. | :22:17. | |
support there was for miners throughout Great Britain, people | :22:18. | :22:22. | |
would know, living miles away from the pits, they were raising money, | :22:23. | :22:27. | |
sending food and going to help out in solidarity. They were very dark | :22:28. | :22:32. | |
days but there was a great spirit from that time. Human spirit came | :22:33. | :22:36. | |
into it. If you are a creature who has recently had to relocate to a | :22:37. | :22:40. | |
different part of the UK, well, you might be finding it difficult to | :22:41. | :22:45. | |
adjust. But take heart because Marty Jobson's butterflies are living | :22:46. | :22:48. | |
proof that you can get used to anything. Butterflies are among the | :22:49. | :22:53. | |
prettiest insects in Britain. Yet across the country their numbers are | :22:54. | :22:59. | |
declining. But there is one species that is bucking the trend. Meet the | :23:00. | :23:09. | |
Brown Argus Butterfly. It can be found in England and Wales and lives | :23:10. | :23:13. | |
for about two weeks or so. While populations of this little beauty | :23:14. | :23:19. | |
are thriving, 70% of other Butterfly populations in this country are in | :23:20. | :23:25. | |
decline. So what's going on? To find out, I'm joining a group of amateur | :23:26. | :23:33. | |
naturalists in Somerset. They regularly survey butterfly | :23:34. | :23:36. | |
populations in this area. We see what butterfly species are there and | :23:37. | :23:41. | |
send that information back into the Butterfly conservation. When data | :23:42. | :23:45. | |
from volunteer groups like these around Britain was collated, an | :23:46. | :23:50. | |
intriguing trend emerged. The purple dots show the sites where Brown | :23:51. | :23:56. | |
Argus was found in the 70s. 20 years ago, hardly any were found north of | :23:57. | :24:00. | |
Sheffield. The yellow dots are all the new sites they've spread too. | :24:01. | :24:06. | |
They've spread 50 miles further north and can now be found in York. | :24:07. | :24:11. | |
It doesn't seem like a particularly big difference but when you consider | :24:12. | :24:15. | |
the butterfly is only about three centimetres across and doesn't | :24:16. | :24:18. | |
normally roam much more than a couple of hundred metres, it is a | :24:19. | :24:21. | |
remarkable expansion. I've come to meet butterfly expert to understand | :24:22. | :24:28. | |
what is driving this spread northwards. It seems that this is in | :24:29. | :24:33. | |
response to recent climate change. But the warming climate, they've | :24:34. | :24:37. | |
been able to exploit new habitats that previously were a bit too cold | :24:38. | :24:44. | |
for them. The Brown Argus is genetically predisposed to lay its | :24:45. | :24:48. | |
eggs on a particular plant. This gives its caterpillar is the best | :24:49. | :24:52. | |
chance of survival, because they start life feeding on the plant they | :24:53. | :24:57. | |
live on. In the south, the Brown Argus lays its eggs on the common | :24:58. | :25:05. | |
rock 'n' roll -- grows. As temperatures have increased, the | :25:06. | :25:09. | |
Brown Argus has spread north. In the absence of its favourite plant, it | :25:10. | :25:13. | |
has switched to laying its eggs on geraniums instead. It looked like | :25:14. | :25:18. | |
these butterflies had evolved in a short period of time, to prefer a | :25:19. | :25:24. | |
different plant. To investigate, we set up an experiment. Under each | :25:25. | :25:30. | |
shopping basket she put four plans. Two what grows and two geraniums. | :25:31. | :25:39. | |
Butterflies were collected from the northern and southern sides and put | :25:40. | :25:44. | |
one under each basket. After three sunny days she counted the number of | :25:45. | :25:47. | |
eggs on each plant, which indicates which planned the butterfly prefers. | :25:48. | :25:59. | |
This particular female, from a northern population, prefers | :26:00. | :26:03. | |
geranium. The northern ones have changed. They'd rather be on | :26:04. | :26:09. | |
geraniums than rockroses given the chance. There's a genetic component | :26:10. | :26:13. | |
of that. Butterflies are hard-wired to a choice for one or the other | :26:14. | :26:20. | |
planned. Analysing the DNA of the butterflies confirmed that the | :26:21. | :26:23. | |
populations are genetically different. We usually think of | :26:24. | :26:27. | |
evolution as a process that takes millions of years, but the Brown | :26:28. | :26:31. | |
Argus has evolved in just a few decades. So how did it happen? 40 | :26:32. | :26:38. | |
years ago, the butterflies laid their eggs on the rockrose plant in | :26:39. | :26:44. | |
the south. But in a few sites some used geraniums instead. As the | :26:45. | :26:46. | |
climate warmed, these trailblazers were able to move north, passing | :26:47. | :26:51. | |
their geranium loving genes onto next generation. Now, in the new | :26:52. | :26:58. | |
northern populations, Brown Argus thrive on geranium plans. These | :26:59. | :27:05. | |
results are incredibly exciting. The new northern population is | :27:06. | :27:09. | |
genetically different from the old southern population, and the Brown | :27:10. | :27:14. | |
Argus is evolving. Natural selection is taking place in just a few | :27:15. | :27:21. | |
decades. Hopefully we will be seeing numbers creeping up again this | :27:22. | :27:25. | |
summer. That's almost it for this evening. Huge thanks to Billy. He is | :27:26. | :27:31. | |
live -- his live at the union Chapel DVD is out now. I'm back tomorrow | :27:32. | :27:36. | |
night with Richard Madeley, Omid Djalili is our guest. Here is Billy | :27:37. | :27:40. | |
with his version of a song that is really fitting for today. We made by | :27:41. | :27:43. | |
the Hillsborough Justice Collective a couple of years ago, its The | :27:44. | :27:45. | |
Hollies classic, He Ain't Heavy. # The road is long. | :27:46. | :28:01. | |
# With many a winding turn. # That leads us to. | :28:02. | :28:14. | |
# Who knows where, who knows where? # But I'm strong. | :28:15. | :28:27. | |
# Strong enough to carry him. # He ain't heavy. | :28:28. | :28:37. | |
# He's my brother. # So on we go. | :28:38. | :28:51. | |
# His welfare is my concern. # No burden is he. | :28:52. | :29:03. | |
# To bear, we will get there. # For I know. | :29:04. | :29:16. | |
# He will not encumber me. # He ain't heavy. | :29:17. | :29:22. | |
# He's my brother. | :29:23. | :29:31. |