Browse content similar to 18/02/2014. Check below for episodes and series from the same categories and more!
Line | From | To | |
---|---|---|---|
Hello and welcome to the One Show with Matt Baker. And Alex Jones. | :00:18. | :00:24. | |
Tonight's guest was in esteemed company last night with Her Majesty | :00:25. | :00:28. | |
the Queen and Dame Helen Mirren. Tonight he is slumming it with us, | :00:29. | :00:36. | |
it is a Sir David Attenborough! Good evening, Sir David. Great to | :00:37. | :00:41. | |
have you here. We have a brilliant picture of you. Caught between two | :00:42. | :00:48. | |
Queens, so to speak. So to speak! Was it a good evening? Yes, very | :00:49. | :00:54. | |
good, and evening in praise and celebration of the Royal Academy of | :00:55. | :01:02. | |
come my brother is president. -- the Royal Academy of Dramatic Arts, of | :01:03. | :01:09. | |
which my brother is president. He is not well, so I was representing him. | :01:10. | :01:16. | |
This was 1958, with Prince Charles at ten years old, and Princess Anne | :01:17. | :01:22. | |
at eight. And that cockatoo was a cockatoo which I traded with pygmies | :01:23. | :01:28. | |
in the centre of New Guinea, and we had been marching for... I don't | :01:29. | :01:34. | |
know, about eight or nine days through unexplored mountains, and we | :01:35. | :01:38. | |
met these pygmies. And one of them had this on his shoulder, and I | :01:39. | :01:43. | |
fancied myself as long John Silver, and I traded it for, I think it was | :01:44. | :01:51. | |
two cakes of salt. Big cakes of salt, which is what we were trading | :01:52. | :01:55. | |
with. And the pygmies had done something to one of her wings so she | :01:56. | :02:02. | |
couldn't fly. Her name was Cocky, very original. I had it for a long | :02:03. | :02:06. | |
time, I brought it back to my home, and she was a lovely bird. But she | :02:07. | :02:13. | |
was a coward. We used to put her out on the wisteria at the back of the | :02:14. | :02:16. | |
house, and when a butterfly would come up, she would go... And she had | :02:17. | :02:23. | |
screamed. I mean, she did drive the neighbours nuts. I was fond of her. | :02:24. | :02:29. | |
The neighbours had more than they could take. Eventually, I discovered | :02:30. | :02:33. | |
there was a lady who was more crazy about cockatoos than I was, and it | :02:34. | :02:40. | |
went on to her. And that lady, I know she has died since then, but | :02:41. | :02:45. | |
cockatoos can live for 100 years, a long time. So I do not know where | :02:46. | :02:51. | |
Copy is now, I am afraid. It is a lovely picture, take it with you. We | :02:52. | :02:58. | |
might need the frame! All the photos that people keep sending in! On we | :02:59. | :03:03. | |
go, when you buy a property, certain checks are carried out by your | :03:04. | :03:06. | |
solicitor to make sure the land you are buying is safe, secure and debt | :03:07. | :03:11. | |
free. But for the visitors of a small town on the outskirts of | :03:12. | :03:15. | |
Glasgow, things have not turned out as planned and they have been left | :03:16. | :03:17. | |
with whopping bills to pay through no fault of their own. Tony has been | :03:18. | :03:27. | |
to see how much each house pose. -- owes. | :03:28. | :03:36. | |
My house, ?43,000. This house, ?14,000. ?60,000, ?25,000, ?69,000. | :03:37. | :03:52. | |
?109,000. This is one of 13 homeowners in Blanefield facing | :03:53. | :03:57. | |
staggering bills to remove contamination from their land. We | :03:58. | :04:04. | |
are not at fault, but we are being asked to basics and rebound ?33,000. | :04:05. | :04:15. | |
I have personally a ?43,000 bill. -- 630 ?3000. Howdy you sleep at night? | :04:16. | :04:25. | |
-- how do you. With difficulty. Through no fault of their own, many | :04:26. | :04:29. | |
residents here face financial ruin thanks to the legacy of a factory | :04:30. | :04:34. | |
built down there back in the 19th century. | :04:35. | :04:39. | |
The picturesque village of Blanefield was home to a huge calico | :04:40. | :04:45. | |
printing works which, at its peak, employed up to 500 men, women and | :04:46. | :04:50. | |
children. Mary is a local historian. What kind of things did | :04:51. | :04:54. | |
they do in the factory? It was calico cloth, they were bleached, | :04:55. | :05:02. | |
watched, bleached. It was quite a process. The big problem was the | :05:03. | :05:08. | |
refuse from the operation. It was put into the Blaine here. It killed | :05:09. | :05:19. | |
the fish and vegetation. 100 years later, it still contaminates the | :05:20. | :05:24. | |
land in the village. It only came to light when in 2012, under recent | :05:25. | :05:30. | |
law, Stirling Council tested the soil and found potentially dangerous | :05:31. | :05:33. | |
levels of arsenic and lead that they say has to be cleaned up. But the | :05:34. | :05:39. | |
firms who bought the print works and the developers who build the homes | :05:40. | :05:42. | |
have long since vanished into the mists of time. With no-one left to | :05:43. | :05:51. | |
take responsibility for the contamination, UK law says | :05:52. | :05:55. | |
homeowners must pay. Martin is one of the people facing ruin. How much | :05:56. | :06:02. | |
will this cost you? The estimated bill, including the landfill tax, | :06:03. | :06:07. | |
will be ?69,000. In terms of our ability to pay, we have no ability | :06:08. | :06:11. | |
to pay, it is a vast amount of money. If we catch everything in, we | :06:12. | :06:16. | |
put everything into the deposit for the house, and it is virtually | :06:17. | :06:20. | |
worthless. It is a stressful situation, for all of us, 12 | :06:21. | :06:24. | |
neighbours. Adding insult to injury is the fact that most of the costs | :06:25. | :06:31. | |
are made up of a landfill tax. It is about 67% of the total bill, and | :06:32. | :06:35. | |
that is administered by the Treasury. And that landfill tax was | :06:36. | :06:39. | |
designed to be no lies people, companies, who pollute the land. It | :06:40. | :06:43. | |
was never designed ordinary families. -- designed to Pina lies | :06:44. | :06:54. | |
people. Money aside, the knowledge that the house is built on | :06:55. | :06:57. | |
contaminated land has meant changes to the way that they live. Exposure | :06:58. | :07:03. | |
to arsenic can lead to higher rates of cancer. We cannot grow fruit or | :07:04. | :07:08. | |
vegetables. We restrict what he does out here. It is a case of shoes off | :07:09. | :07:17. | |
at the door, wash your hands. Developed in the 1950s, the homes | :07:18. | :07:22. | |
here were built before the 1990 Environmental Protect Act. It is | :07:23. | :07:25. | |
only since then that developers are required by law to remediate | :07:26. | :07:30. | |
contaminated land. Before then, there were fewer controls. There is | :07:31. | :07:36. | |
an estimated 325,000 potentially contaminated sites in the UK, and | :07:37. | :07:40. | |
with a greater push to build on brown field sites, should homeowners | :07:41. | :07:44. | |
be worried? Is there anything you can do to check? The best people to | :07:45. | :07:49. | |
speak to the local authority, who have historical data on the site and | :07:50. | :07:52. | |
the work that has been done to develop the site. But if you are | :07:53. | :07:56. | |
worried, speak to your surveyor to see if they can afford you | :07:57. | :08:02. | |
additional advice. Residents here have been lobbying the UK and | :08:03. | :08:07. | |
Scottish Governments for help. The Scottish Government will take | :08:08. | :08:11. | |
control in 2015 of landfill tax, and they have made a commitment to look | :08:12. | :08:15. | |
at residents affected by the tax. Ultimately, it is still in council | :08:16. | :08:19. | |
who is responsible to ensure that the land is remediating by the | :08:20. | :08:25. | |
landowner, and while they have pledged ?125,000 towards the final | :08:26. | :08:29. | |
bill, the residents are facing huge bills. | :08:30. | :08:33. | |
That is an unbelievable worry for the residents. Lucy is here now, a | :08:34. | :08:38. | |
big percentage of the cost they have to pay out is going to go towards | :08:39. | :08:45. | |
landfill tax. Can you explain that. Let's look at poor Fiona, the bill | :08:46. | :08:53. | |
is over ?30,000. It only costs ?17,000 to remove the soil, but | :08:54. | :08:59. | |
there is ?18,000 in landfill tax and then VAT. Landfill tax is basically | :09:00. | :09:04. | |
something that we have kind of inherited, because we have always | :09:05. | :09:08. | |
mined in the UK, we did the pits, and then we fill them with rubbish. | :09:09. | :09:11. | |
There are lots of environmental issues around that, so the tax was | :09:12. | :09:17. | |
for companies, really, to discourage them from throwing waste away in | :09:18. | :09:20. | |
that way and get them to recycle and all that sort of thing. The tax goes | :09:21. | :09:25. | |
up every year. It was never intended for people like the owner, and that | :09:26. | :09:29. | |
is one of the tragedies of this situation. Meant for companies, not | :09:30. | :09:34. | |
individuals. I hope the residents are watching tonight, because you | :09:35. | :09:39. | |
have got some news. Yes, we have tracked down Danny Alexander, who | :09:40. | :09:43. | |
was out on Treasury business today, and we asked him what he could do | :09:44. | :09:47. | |
for the Blanefield residence, and this is what he said. So the | :09:48. | :09:54. | |
Treasury will offer a grant of ?225,000 to help the residents deal | :09:55. | :09:58. | |
with the problems. It is a grant, because that is the quickest way to | :09:59. | :10:02. | |
deal with the problems, rather than tax relief, which is complicated and | :10:03. | :10:07. | |
would take a long period of time. We now need the Scottish Government to | :10:08. | :10:10. | |
make available a similar sum of money so we can meet all the costs | :10:11. | :10:13. | |
required and make sure the problems are dealt with as quickly as | :10:14. | :10:19. | |
possible. Massive news! We have not managed to tell the residence yet, | :10:20. | :10:23. | |
so they will have their calculator is out, I am sure. This could | :10:24. | :10:27. | |
potentially be a lifeline, because my reckoning they had 125,000 in the | :10:28. | :10:33. | |
pot from the council, 255,000 from Danny Alexander, but we do need the | :10:34. | :10:37. | |
Scottish Government to match that for them to clear their bill. We | :10:38. | :10:42. | |
would like to hear from them! They are at home watching the One Show. | :10:43. | :10:51. | |
Tomorrow, yes, fingers crossed. That would be amazing. | :10:52. | :10:55. | |
Over the past few weeks, we have all seen how the British coastline has | :10:56. | :11:00. | |
been ravaged by storms. But it is not all bad news, as Angellica has | :11:01. | :11:04. | |
been finding out on the north Norfolk coast. The coastal storms | :11:05. | :11:09. | |
have actually been helping. The beast and flooding is just the | :11:10. | :11:12. | |
latest extreme weather events to hit the UK this winter. -- the recent. | :11:13. | :11:18. | |
Back in December, the worst tidal flood for 60 years battered the | :11:19. | :11:24. | |
Norfolk coastline. This stretch of beach in Norfolk was badly hit. You | :11:25. | :11:32. | |
have to try and imagine the sea coming over and breaking through | :11:33. | :11:37. | |
that shingle barrier, completely covering this marshland and coming | :11:38. | :11:40. | |
all the way up here to this coastal road, where it flooded many homes | :11:41. | :11:45. | |
and businesses. The sea broke through the shingle wall, allowing | :11:46. | :11:48. | |
water to reach the coastal road and houses. Kevin manages the marshland, | :11:49. | :11:57. | |
which is an important habitat for wildlife here. It caused a lot of | :11:58. | :12:01. | |
damage to property, a lot of damage to the infrastructure. It puts salt | :12:02. | :12:06. | |
water into the freshwater systems, so the main feeds into the marshes | :12:07. | :12:10. | |
became completely safe line, so that causes a huge amount of damage to | :12:11. | :12:14. | |
plants and wildlife that uses the freshwater. -- saline. This is one | :12:15. | :12:19. | |
of the places where it punched through the shingle bank, and it is | :12:20. | :12:24. | |
on the old Greek system that you can see from aerial photographs. This is | :12:25. | :12:28. | |
obviously a weak point where it used to go out to sea, and that is where | :12:29. | :12:33. | |
it reached and pushed through. Since that time, they have actually | :12:34. | :12:37. | |
started to heal themselves, and the sea has started bringing in this | :12:38. | :12:40. | |
material. It was a raging torrent one month ago with water completely | :12:41. | :12:46. | |
in free exchange with the marshes and the sea. The cost to fix the | :12:47. | :12:50. | |
gaps was estimated at ?60,000 and would have been part of the managed | :12:51. | :12:55. | |
retreat policy for this stretch of coast. Not all local residents are | :12:56. | :12:59. | |
happy with the policy. Peter and as you think it is important that | :13:00. | :13:04. | |
drainage is maintained. We must keep the dikes and natural drainage clean | :13:05. | :13:13. | |
at all times, because they must be kept clear so that any tide coming | :13:14. | :13:18. | |
in can flow. At the moment, it cannot flow, so we are in danger of | :13:19. | :13:25. | |
being flooded again. Do you think people will have to move from the | :13:26. | :13:29. | |
village? I think you will see the village slowly die, yeah. I think it | :13:30. | :13:38. | |
will slowly go. I do not think there is an easy answer to it, really. You | :13:39. | :13:42. | |
cannot spend millions and millions on a village like this. In this | :13:43. | :13:49. | |
case, like I said, we have been very fortunate that they have self | :13:50. | :13:52. | |
repaired. It was a little bit of weight and see and hope, and that | :13:53. | :13:56. | |
was the Environment Agency attitude towards it, let's wait and see, and | :13:57. | :14:02. | |
luckily for us and for the reserve, that is what has happened, you know, | :14:03. | :14:06. | |
a huge tonnage of shingle has been pushed back in by the sea, which | :14:07. | :14:11. | |
would have cost hundreds of thousands of pounds to do it | :14:12. | :14:14. | |
mechanically. Every cloud! Yeah, they were | :14:15. | :14:21. | |
fortunate in that part of the world, but other areas have not been. Your | :14:22. | :14:26. | |
new series, Sir David, starts tonight on Watch, it is called | :14:27. | :14:34. | |
Natural Curiosities. You compare two animals that you would not normally | :14:35. | :14:38. | |
put together, is that how you would describe it? That is incidental. The | :14:39. | :14:44. | |
thing about the series, actually, is that it looks at animals sometimes | :14:45. | :14:47. | |
from an historical point of view, how do we understand them and | :14:48. | :14:52. | |
discover them? Sometimes it is individual animals that have | :14:53. | :14:55. | |
extraordinary histories. And we look at all kinds of odd things, and in | :14:56. | :15:00. | |
this particular instance, quite a recent discovery. Everybody knows, a | :15:01. | :15:09. | |
lot of people know about the Komodo dragon, the largest lizard in the | :15:10. | :15:11. | |
world, ten or 12 feet long. But perhaps everybody does not realise | :15:12. | :15:14. | |
that recently there has been a scientific discovery that the Komodo | :15:15. | :15:21. | |
dragon, females, can produce young without any help from males, virgin | :15:22. | :15:25. | |
birth, parthenogenesis. You may say, what does that link with any | :15:26. | :15:28. | |
other animal? Amazingly, it links with an animal that you will be | :15:29. | :15:34. | |
familiar with if you have a garden, the greenfly. The green flies do the | :15:35. | :15:43. | |
same thing. That is the nice thing about the series. You link it with | :15:44. | :15:46. | |
animals that we would be familiar with. I watched that episode of | :15:47. | :15:52. | |
virgin births with my six-year-old son, and of course, it does raise a | :15:53. | :15:58. | |
lot of questions. But as soon as you put it into the theatre, you can go | :15:59. | :16:03. | |
out into the garden and experience it yourself, and it becomes very | :16:04. | :16:08. | |
real. The first time I saw a female aphid, you can look at it through | :16:09. | :16:14. | |
the lens, because they have transparent bodies, and I could see | :16:15. | :16:18. | |
there was a baby inside. If you have a powerful lens, you can see that | :16:19. | :16:23. | |
inside the baby is another baby, like Russian dolls! You have three | :16:24. | :16:29. | |
babies all in one. And they are all just like the mother. That's right. | :16:30. | :16:34. | |
And that is why, overnight, your roses could be covered in tens of | :16:35. | :16:41. | |
thousands of aphids, because they reproduce at that speed. Sir David, | :16:42. | :16:46. | |
we have seen you all over the world, covering all sorts of species. What | :16:47. | :16:50. | |
remains for you? What are you passionate about making a film about | :16:51. | :16:55. | |
next, that maybe isn't connected to the animal world? I determine got | :16:56. | :17:00. | |
time. I make films about things that interest me. I will be leaving for | :17:01. | :17:05. | |
Borneo very soon, and there we will be filming a series in 3D, about | :17:06. | :17:11. | |
flight, about how flight developed in the animal world. That flight | :17:12. | :17:16. | |
first developed in insects, of course, in dragonflies, for about 50 | :17:17. | :17:21. | |
million years. Then you have animals that blinded, then dinosaur things, | :17:22. | :17:31. | |
things which have skinny wings. Then you had birds, then you had bats. | :17:32. | :17:37. | |
All of those involved over the period of prehistoric life, and that | :17:38. | :17:41. | |
is what we are filming. A little bird told me that you are into | :17:42. | :17:48. | |
tribal art as well. Me? Yes, I once made a series along time ago, back | :17:49. | :17:56. | |
in the 70s, a long time ago. We had a great time. I am very interested | :17:57. | :18:05. | |
in African sculpture and that sort of thing. If you are curious about | :18:06. | :18:10. | |
the animal world, David Attenborough's Natural Curiosities | :18:11. | :18:15. | |
will be on Watch to night. Now, a case of honour, fraud and deception. | :18:16. | :18:21. | |
One in which the truth only emerged because evidence was planted at the | :18:22. | :18:24. | |
scene of the crime. The Hebridean island of rum. It was | :18:25. | :18:29. | |
in this peaceful wilderness that an audacious forgery was uncovered in | :18:30. | :18:35. | |
1848, not in the world of art all publishing, but in botany. It | :18:36. | :18:43. | |
involved hidden manuscripts and undercover missions, a very British | :18:44. | :18:48. | |
case of fakery. The story of a respected botanist who went to a -- | :18:49. | :18:53. | |
to extreme lengths to be the first to prove a theory. Professor John | :18:54. | :18:59. | |
Heslop Harrison was a talented botanist who had an extraordinary | :19:00. | :19:03. | |
theory that the iron of Brom had escaped the last ice age. -- the | :19:04. | :19:14. | |
island of Rum. All he needed to do was to prove his theory. Ian | :19:15. | :19:19. | |
MacDonald isn't expert on Paes's plants. -- Rum's plants. He knew the | :19:20. | :19:32. | |
area very well. He knew that Rum had a rare read -- a varied geology, and | :19:33. | :19:41. | |
had lots of plants on it. By the 1840s, Heslop Harrison began to make | :19:42. | :19:46. | |
a number of botanical discoveries that appeared to prove his theory. | :19:47. | :19:51. | |
But they were so regular and so extraordinary that they began to | :19:52. | :19:57. | |
arouse the suspicions of his peers. The botany Department of Cambridge | :19:58. | :20:00. | |
University hatched a plan to send someone to investigate. John Raven | :20:01. | :20:07. | |
was the perfect candidate to pose as an impressionable student on one of | :20:08. | :20:12. | |
Heslop Harrison's field trips. This is John Raven's son. What did he | :20:13. | :20:19. | |
think of Heslop Harrison? He would have been aware of him, because he | :20:20. | :20:23. | |
was a well-known botanist. He would have been aware of his theories, and | :20:24. | :20:28. | |
that is what piqued his curiosity about going to have a look at it. Do | :20:29. | :20:34. | |
you know what his thoughts were before he set foot on Rum? He was | :20:35. | :20:41. | |
there partly through subterfuge. He did not tell Heslop Harrison why he | :20:42. | :20:47. | |
was there. Once Raven had arrived on Rum, he saw for himself the | :20:48. | :20:52. | |
astonishing species who supposedly grew there. As has not Harrison | :20:53. | :20:57. | |
toured around the island with his students, Raven noticed something | :20:58. | :21:04. | |
extraordinary, writing later: One plant looked that it had -- looks | :21:05. | :21:12. | |
precisely as if it had been faring -- fairly recently planted. He also | :21:13. | :21:17. | |
noted that five plants were accompanied by weeds associated | :21:18. | :21:22. | |
primarily with gardens. To prove his theory, Heslop Harrison needed | :21:23. | :21:26. | |
evidence of plants that were not native to Britain. So in secret, he | :21:27. | :21:31. | |
planted plants like this one, things that have come from places much | :21:32. | :21:37. | |
colder than this, to prove what he genuinely believed - that Rum's | :21:38. | :21:41. | |
plants had survived and could not have come from anywhere else. The | :21:42. | :21:46. | |
suspicions of Cambridge University proved to be true. To find five new | :21:47. | :21:53. | |
species to the British Isles on one hill on one island, it is a bit like | :21:54. | :21:58. | |
you or I winning the National Lottery five times. I guess he got a | :21:59. | :22:02. | |
little bit too ambitious, little bit too greedy. Having seen the impostor | :22:03. | :22:10. | |
plants first-hand, Raven concluded that Heslop Harrison must have grown | :22:11. | :22:15. | |
them in his garden. What is more, the established foreign plants on | :22:16. | :22:20. | |
Rum suggested that Heslop Harrison had been planting these home-grown | :22:21. | :22:24. | |
variations for years. Raven filed his report on his return to | :22:25. | :22:30. | |
Cambridge, exposing has not Harrison is a fraud, but its contents would | :22:31. | :22:34. | |
not come to light for another 50 years. He didn't want the report to | :22:35. | :22:39. | |
be publicised until his Paris and had died. Why? He did not want to | :22:40. | :22:48. | |
disgrace him. He did not want to embarrass him. In 1967, Heslop | :22:49. | :22:57. | |
Harrison's records were quietly removed from the botanical archives. | :22:58. | :23:03. | |
It is an extraordinary story of Jane -- of fraud, concluded in the most | :23:04. | :23:07. | |
gentlemanly fashion. The list of the rarest wild animals | :23:08. | :23:14. | |
cited in Britain has just come out. The pine Martin and the Golden Eagle | :23:15. | :23:20. | |
are in the top three. You can appreciate the second one, the pine | :23:21. | :23:27. | |
marten. Yes, you have to be extremely lucky, because it lives | :23:28. | :23:31. | |
high up in pine trees. They are very rare. I have seen them in captivity. | :23:32. | :23:37. | |
The One Show cameras managed once, didn't we? Mike saw them. Where was | :23:38. | :23:46. | |
it? It was up in Scotland. Somewhere in Scotland, but we know the secret | :23:47. | :23:50. | |
spot, so if you would like us to tell you, we can. Wild? Yes. Can you | :23:51. | :23:59. | |
believe that one in four people have never seen a hedgehog in the wild? I | :24:00. | :24:04. | |
am surprised about that, because many have seen them squashed flat on | :24:05. | :24:08. | |
the road! Perhaps that doesn't count. Something happened on Sunday. | :24:09. | :24:17. | |
Yes, the sun came out! And wasn't it nice to see it. It is always better | :24:18. | :24:25. | |
when the sunshine is. Here is Martin with the science behind what makes | :24:26. | :24:28. | |
sunsets and sunrises are so beautiful. | :24:29. | :24:35. | |
It is 6:15am, and first light is breaking over the West Coast of | :24:36. | :24:39. | |
Scotland. Why am I here at the crack of dawn? I am going to explore the | :24:40. | :24:44. | |
science behind the sunrise and sunset. These are the times of day | :24:45. | :24:50. | |
that photographers call the magic hour, when the landscape is bathed | :24:51. | :25:00. | |
in colour, and landscapes -- and the skies are brilliant colours of gold | :25:01. | :25:04. | |
and red hues. But what is going on up there is not magic, it is | :25:05. | :25:09. | |
science. Graham McFarlane is an award-winning photographer, who | :25:10. | :25:11. | |
specialises in shooting at dawn and dusk. That is a fabulous place. | :25:12. | :25:19. | |
Fantastic. When you come here first thing in the morning, what are you | :25:20. | :25:24. | |
looking for? I am looking for the castle being front lit, the sun | :25:25. | :25:27. | |
coming up from the east behind me, picking up the detail on the castle. | :25:28. | :25:33. | |
You get a reflection, and that lovely warm home to the castle. It | :25:34. | :25:40. | |
picks it up against the backdrop of the mountains. At dawn, the sun | :25:41. | :25:44. | |
lights up the clouds with subtle pinks. Oranges and golds follow as | :25:45. | :25:50. | |
it rises above the horizon. But these are not the sun's true | :25:51. | :25:55. | |
colours. This is a weather balloon. If I let it go, it will just go up | :25:56. | :26:01. | |
and up and up. Eventually, it ascends to the upper reaches of the | :26:02. | :26:06. | |
Earth's atmosphere, where a NASA photograph shows that the sun is | :26:07. | :26:14. | |
brilliant white. But white light isn't just white. If you shine a | :26:15. | :26:19. | |
beam of light through a prism, as Newton showed, you can split the | :26:20. | :26:23. | |
white light into all the colours of the rainbow, each with its own | :26:24. | :26:29. | |
wavelength. Blue light, for example, has a very short wavelength, whereas | :26:30. | :26:33. | |
red light has a much longer wavelength. Each wavelength behaves | :26:34. | :26:40. | |
differently when passing through our atmosphere. When we see the rising | :26:41. | :26:44. | |
and setting sun we are mostly seeing the longer wavelengths, yellows, | :26:45. | :26:48. | |
oranges and reds. What has happened to the blue light? The atmosphere is | :26:49. | :26:56. | |
full of particles, gases, moisture and pollution. Imagine that the | :26:57. | :26:59. | |
water in this fish tank is the water up -- is the atmosphere above us. | :27:00. | :27:07. | |
This light is the sun. Blue light, with its shorter wavelength, has | :27:08. | :27:12. | |
more energy, so it interacts with the particles more vigorously, and | :27:13. | :27:15. | |
is more easily scattered than the rest of the spectrum. All the water | :27:16. | :27:20. | |
has a blue tinge now, and this is why the sky is blue, because the | :27:21. | :27:25. | |
sunlight is being scattered down, but only the blue part. It is why we | :27:26. | :27:30. | |
see the sun as yellow. It is what remains of the white light when the | :27:31. | :27:35. | |
blue light has been scattered by the atmosphere. As the sunsets, the sun | :27:36. | :27:40. | |
comes in at a shallow angle, so it has to pass through more of the | :27:41. | :27:45. | |
atmosphere, which tends to contain more particles at the end of the | :27:46. | :27:49. | |
day, because of a build up of moisture and pollution. If I add a | :27:50. | :27:54. | |
little bit more... As the light has to pass through more particles, more | :27:55. | :27:59. | |
wavelengths and colours are scattered. None of the blue light | :28:00. | :28:03. | |
campaign trek through, leaving just the oranges and reds that give us | :28:04. | :28:08. | |
the sunset colours. You can't beat the real thing, though, which is why | :28:09. | :28:13. | |
Graham is back at the castle, hoping for a break in the rather ominous | :28:14. | :28:19. | |
looking clouds. What makes a particularly good sunset photo? | :28:20. | :28:25. | |
Ideally we would have sums -- some clouds in the sky. We want some | :28:26. | :28:30. | |
scattering of light onto the clouds. I like the silhouette. Today, we | :28:31. | :28:39. | |
were unlucky. The cloud was too thick for a really dramatic sunset, | :28:40. | :28:44. | |
but the spectacle of the sun going down is the most photographed of all | :28:45. | :28:49. | |
natural events. An astronomer once said, it does no harm to the romance | :28:50. | :28:54. | |
of a sunset to know a little bit about it. I would go further, and | :28:55. | :29:00. | |
say it only enhances our appreciation. | :29:01. | :29:08. | |
I would agree! Lovely pictures. That's it for tonight. David | :29:09. | :29:12. | |
Attenborough's Natural Curiosities starts tonight at 8pm on Watch. Sir | :29:13. | :29:16. | |
David, thank you so much for coming in. Tomorrow, the three stars of I'm | :29:17. | :29:21. | |
Sorry I Haven't A Clue will be here. Alex is off to the Philippines for | :29:22. | :29:25. | |
the next few days, so tomorrow I'll be joined by Gabby Logan. We will | :29:26. | :29:28. | |
see you at 7pm. | :29:29. | :29:33. |