Browse content similar to 01/10/2016. Check below for episodes and series from the same categories and more!
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Coming up next it's time for Click. | 0:00:00 | 0:00:02 | |
This week, big sun, big rain - and massive robots! | 0:00:05 | 0:00:12 | |
It's a huge ball of energy just waiting to be tapped. | 0:00:38 | 0:00:43 | |
Banks of solar cells are springing up all over the place, | 0:00:43 | 0:00:48 | |
absorbing the sunlight and turning it into electricity. | 0:00:48 | 0:00:51 | |
I've come to Oxford University to meet Professor Henry Snaith, | 0:00:51 | 0:00:53 | |
who's trying to squeeze more and more energy out of the sun. | 0:00:53 | 0:00:59 | |
Current technology based on silicon is fundamentally limited in terms | 0:00:59 | 0:01:02 | |
of the efficiency it can deliver. | 0:01:02 | 0:01:03 | |
Silicon can only absorb a fixed band of light, | 0:01:03 | 0:01:08 | |
a fixed spectrum of light - it absorbs all the visible | 0:01:08 | 0:01:11 | |
and the infrared light and then converts that into electricity. | 0:01:11 | 0:01:14 | |
They've been developed for about the last 60 years, | 0:01:14 | 0:01:16 | |
and the maximum efficiency is about 25%. | 0:01:16 | 0:01:21 | |
The trick is to use different materials, alongside silicon, | 0:01:21 | 0:01:24 | |
to absorb more of the sun's energy. | 0:01:24 | 0:01:28 | |
Henry's team are investing ways of coating the silicon cells | 0:01:28 | 0:01:31 | |
with a crystalline structure called perovskite, which can convert more | 0:01:31 | 0:01:34 | |
energy from different wavelengths of light and can generate | 0:01:34 | 0:01:36 | |
electricity at a surprisingly high voltage. | 0:01:36 | 0:01:40 | |
At the moment, we're right on the cusp in most places, | 0:01:40 | 0:01:43 | |
or lots of places in the world, where we can produce electricity | 0:01:43 | 0:01:47 | |
from solar cells as cheaply as we can from coal. | 0:01:47 | 0:01:49 | |
So if we now increase the efficiency, it will become | 0:01:49 | 0:01:52 | |
cheaper and cheaper and cheaper to produce electricity | 0:01:52 | 0:01:54 | |
from solar cells. | 0:01:54 | 0:01:55 | |
Solar energy could deliver the sort of transformative change in society | 0:01:55 | 0:01:58 | |
as we saw at the turn of the 20th century with the discovery | 0:01:58 | 0:02:02 | |
of liquid fuels. | 0:02:02 | 0:02:04 | |
Henry and his team are still near the beginning of that journey. | 0:02:04 | 0:02:08 | |
His perovskite-coated solar cells are still climbing | 0:02:08 | 0:02:11 | |
towards an efficiency of 25%, which will match the current | 0:02:11 | 0:02:14 | |
best silicon-only cells. | 0:02:14 | 0:02:18 | |
It doesn't sound like much, but efficiency in the high 20%s is | 0:02:18 | 0:02:21 | |
a big deal for the solar industry. | 0:02:21 | 0:02:23 | |
And it doesn't end there. | 0:02:23 | 0:02:26 | |
There is a group of young researchers in Switzerland | 0:02:26 | 0:02:29 | |
who are pushing solar technology even further. | 0:02:29 | 0:02:35 | |
And Dan Simmons has been to meet them. | 0:02:35 | 0:02:37 | |
The modern-day magnificent seven. | 0:02:38 | 0:02:40 | |
Maybe. | 0:02:40 | 0:02:41 | |
These guys want to change the world by shaping light. | 0:02:41 | 0:02:46 | |
You see, their plan is to make a solar panel that doesn't just | 0:02:46 | 0:02:50 | |
offer a tiny bit more energy than the last one - | 0:02:50 | 0:02:53 | |
that's been happening for decades - but one that can deliver a seismic | 0:02:53 | 0:02:56 | |
leap and push out almost twice the energy of | 0:02:56 | 0:02:59 | |
standard rooftop panels. | 0:02:59 | 0:03:04 | |
The trick is not about coming up with better photovoltaic materials - | 0:03:04 | 0:03:07 | |
they exist already. | 0:03:07 | 0:03:08 | |
They're focusing on the light itself. | 0:03:08 | 0:03:13 | |
So we are using a lens which is basically a magnifying | 0:03:13 | 0:03:16 | |
glass, but with a very particular shape, so that we can track the sun | 0:03:16 | 0:03:20 | |
throughout the day with minuscule displacements, so the stroke of it. | 0:03:20 | 0:03:29 | |
We are just moving laterally by a couple of millimetres per day, | 0:03:29 | 0:03:32 | |
so it's a very slow movement, and it doesn't consume any energy, | 0:03:32 | 0:03:36 | |
or very little energy. | 0:03:36 | 0:03:44 | |
Now, the guys have set this up moving a little bit quicker | 0:03:44 | 0:03:47 | |
than it normally would. | 0:03:47 | 0:03:48 | |
In fact, the whole panel would move about one centimetre in a day, | 0:03:48 | 0:03:52 | |
tracking the sun across the sky. | 0:03:52 | 0:03:53 | |
And to do that, it would use less than 1% of the actual | 0:03:53 | 0:03:57 | |
energy it produces. | 0:03:57 | 0:03:58 | |
The other advantage of this system is, because the movement | 0:03:58 | 0:04:00 | |
is so small, it can be housed in a normal solar-panel frame, | 0:04:00 | 0:04:04 | |
so you can put it up on rooftops with minimal maintenance. | 0:04:04 | 0:04:07 | |
Which is kind of unusual for a tracking solar-panel system. | 0:04:07 | 0:04:09 | |
The first independent lab test earlier this month measured | 0:04:09 | 0:04:12 | |
an efficiency rating that would be off the charts for residential solar | 0:04:12 | 0:04:15 | |
panels - over 36%. | 0:04:15 | 0:04:17 | |
We realised that this might be the most efficient flat panel | 0:04:17 | 0:04:22 | |
in the world, and we realised the importance of keeping, | 0:04:22 | 0:04:26 | |
managing to reproduce these mini modules at wide scale. | 0:04:26 | 0:04:30 | |
That is what we need to do now. | 0:04:30 | 0:04:37 | |
If it works the way it works in prototype, it's a great product, | 0:04:37 | 0:04:41 | |
so it's really scaling up, that is not so easy to do, | 0:04:41 | 0:04:44 | |
but that is what we'll focus on for the next few months. | 0:04:44 | 0:04:47 | |
As well as the optics, the other trick these guys | 0:04:47 | 0:04:50 | |
are using is to make use of the most expensive and efficient | 0:04:50 | 0:04:53 | |
photovoltaics in the world. | 0:04:53 | 0:04:54 | |
Satellites get their power from the sun, and these panels cost | 0:04:54 | 0:04:57 | |
around $30,000 per square metre. | 0:04:57 | 0:04:59 | |
That is far too expensive to use down here. | 0:04:59 | 0:05:01 | |
It would take decades to get your money back. | 0:05:01 | 0:05:03 | |
But because the system concentrates the incoming light, | 0:05:03 | 0:05:06 | |
just look at how big an area now needs to be covered. | 0:05:06 | 0:05:10 | |
It's just those seven tiny black dots on this panel. | 0:05:10 | 0:05:16 | |
With world-class materials and low-cost maintenance, | 0:05:16 | 0:05:20 | |
the guys are aiming for the system to pay for itself | 0:05:20 | 0:05:25 | |
inside of five years. | 0:05:25 | 0:05:26 | |
So what's not to like? | 0:05:26 | 0:05:28 | |
I asked a solar expert who's been in the industry for over 20 years. | 0:05:28 | 0:05:32 | |
Many pundits are saying that even with the kind of incremental | 0:05:32 | 0:05:36 | |
increases in efficiency that we've in recent years, solar | 0:05:36 | 0:05:40 | |
is heading for a place in the mainstream of global energy, | 0:05:40 | 0:05:44 | |
even as a backbone of global energy, possibly, you know, in as short | 0:05:44 | 0:05:47 | |
a period as a couple of decades from now. | 0:05:47 | 0:05:53 | |
When you have moving parts, you have a large number of other | 0:05:53 | 0:05:56 | |
things that could go wrong. | 0:05:56 | 0:05:58 | |
I very much hope that they solve it and come up with the first | 0:05:58 | 0:06:02 | |
concentrator, moving concentrator, and do deliver this step function, | 0:06:02 | 0:06:04 | |
because that would be very much the icing on the cake. | 0:06:04 | 0:06:07 | |
It seems the solar revolution is coming. | 0:06:07 | 0:06:11 | |
Battery and panel prices have been tumbling, while consumers | 0:06:11 | 0:06:15 | |
are warming to electric vehicles that could be used | 0:06:15 | 0:06:18 | |
to store the energy. | 0:06:18 | 0:06:20 | |
Fossil fuels could finally be facing extinction, and this focus - | 0:06:20 | 0:06:28 | |
from the Magnificent Seven - could serve to speed that up. | 0:06:28 | 0:06:31 | |
Hello and welcome to the week in tech. | 0:06:33 | 0:06:37 | |
It was the week that BlackBerry announced they would no longer | 0:06:37 | 0:06:40 | |
make their own phones. | 0:06:40 | 0:06:41 | |
The one-time market leader has struggled to keep pace | 0:06:41 | 0:06:44 | |
with the serious sales of Apple and Samsung handsets. | 0:06:44 | 0:06:47 | |
A spoof video got people doing something seriously daft. | 0:06:47 | 0:06:52 | |
Drilling into your iPhone 7 will not bring back the old headphones jack. | 0:06:52 | 0:06:55 | |
And Amazon, Google, Facebook, IBM and Microsoft announced | 0:06:55 | 0:07:00 | |
they will collaborate to create some serious artificial intelligence. | 0:07:00 | 0:07:04 | |
The Partnership on AI hopes to create the best ways of dealing | 0:07:04 | 0:07:08 | |
with issues like privacy, transparency, and how man | 0:07:08 | 0:07:10 | |
and machine work together. | 0:07:10 | 0:07:13 | |
In other news, US Girl Scouts can earn a new badge | 0:07:13 | 0:07:16 | |
for developing video games. | 0:07:16 | 0:07:19 | |
Brownies' honour! | 0:07:19 | 0:07:20 | |
Is that how you do it? | 0:07:20 | 0:07:22 | |
Women in Games International have teamed up with the Girl Scouts | 0:07:22 | 0:07:26 | |
of Los Angeles to hold sessions at PlayStation's | 0:07:26 | 0:07:28 | |
Santa Monica Studio. | 0:07:28 | 0:07:30 | |
It'll teach them how to develop their video-gaming | 0:07:30 | 0:07:33 | |
talents in the hope more girls will seek opportunities | 0:07:33 | 0:07:36 | |
in the industry. | 0:07:36 | 0:07:38 | |
And, finally, you can't teach an old robot new tricks. | 0:07:38 | 0:07:41 | |
Hang on, that doesn't sound right. | 0:07:41 | 0:07:45 | |
Pepper the robot has been learning to catch a ball in a cup. | 0:07:45 | 0:07:50 | |
It may have taken a while, but after 100 tries it achieved | 0:07:50 | 0:07:56 | |
a 100% success rate. | 0:07:56 | 0:07:57 | |
It is hoped that the principles applied here could be | 0:07:57 | 0:08:00 | |
used to teach other agility-type motions. | 0:08:00 | 0:08:02 | |
Cocktail waiters and netball players beware! | 0:08:02 | 0:08:04 | |
The distant future! | 0:08:04 | 0:08:13 | |
A devastating war leaves machines ruling the world. | 0:08:13 | 0:08:21 | |
One man stands against the technological tyranny | 0:08:21 | 0:08:24 | |
of the planet's robot overlords. | 0:08:24 | 0:08:31 | |
He's ready to bash those bots and destroy the droids. | 0:08:31 | 0:08:37 | |
This might be a bit easier than I expected. | 0:08:37 | 0:08:40 | |
Marc Cieslak, on the other hand, might have a bigger bit of bother | 0:08:40 | 0:08:43 | |
with a burly bot in America. | 0:08:44 | 0:08:46 | |
Televised robotic combat usually requires small, | 0:08:57 | 0:09:00 | |
remotely controlled robots which are fitted with tools | 0:09:00 | 0:09:03 | |
and things that you might find in your garden shed being used | 0:09:03 | 0:09:06 | |
as offensive weapons. | 0:09:06 | 0:09:09 | |
Well, I've come to a workshop just outside San Francisco to meet a team | 0:09:09 | 0:09:15 | |
of engineers who are planning a robotic rumble on a much, | 0:09:15 | 0:09:18 | |
much grander scale. | 0:09:18 | 0:09:20 | |
Say hello to the MegaBot Mark II. | 0:09:20 | 0:09:23 | |
It stands 15 feet tall and weighs nearly six tonnes. | 0:09:28 | 0:09:32 | |
It moves around on five tracks on the front of it. | 0:09:32 | 0:09:36 | |
It's not particularly nimble, but it doesn't need to be, | 0:09:36 | 0:09:41 | |
because when this robot engages in combat, it makes use | 0:09:41 | 0:09:43 | |
of a giant paintball cannon. | 0:09:43 | 0:09:46 | |
MegaBots was founded in 2014 by engineers | 0:09:48 | 0:09:50 | |
Gui Cavalcanti and Matt Oehrlein. | 0:09:50 | 0:09:55 | |
So how long was the design process for this fella? | 0:09:55 | 0:10:01 | |
Realistically, it got put together over the course of maybe a year. | 0:10:04 | 0:10:07 | |
Lots of the components on this robot are taken from the construction | 0:10:07 | 0:10:10 | |
industry, parts that you would normally see | 0:10:10 | 0:10:12 | |
on an excavator or skid-steer. | 0:10:12 | 0:10:17 | |
So in terms of what it can do, the fact that it's got | 0:10:17 | 0:10:20 | |
these weapons on it, all that type of stuff - | 0:10:20 | 0:10:23 | |
did you figure that out before you started building it? | 0:10:23 | 0:10:26 | |
The pneumatic weapons were always part of the original plan. | 0:10:26 | 0:10:29 | |
This is a six-inch diameter paint cannonball cannon. | 0:10:29 | 0:10:31 | |
It shoots 3lb paint cannonballs at speeds of over 130 mph. | 0:10:31 | 0:10:35 | |
This is a 20 pack, we call it a missile launcher, | 0:10:35 | 0:10:39 | |
but essentially it's 20 smaller pneumatic cannons stacked | 0:10:39 | 0:10:41 | |
next to each other. | 0:10:41 | 0:10:43 | |
So, originally, these shot foam missiles. | 0:10:43 | 0:10:52 | |
Enough talk! | 0:10:52 | 0:10:52 | |
Time for a robotic test-drive. | 0:10:52 | 0:10:58 | |
Now, as I don't have my giant fighting robot licence, | 0:10:58 | 0:11:04 | |
I'm sitting in the gunner's position while Matt is doing all the heavy | 0:11:04 | 0:11:08 | |
lifting actually driving the robot around. | 0:11:08 | 0:11:11 | |
But don't worry, I'll have something to do in just a minute. | 0:11:11 | 0:11:15 | |
You see, I'd quite like to use a vehicle like this | 0:11:15 | 0:11:18 | |
on the commute in London. | 0:11:18 | 0:11:21 | |
I've got a feeling that black cabs would react very differently | 0:11:21 | 0:11:27 | |
when they look in the rear view mirror and saw this behind them. | 0:11:27 | 0:11:31 | |
Normally, the cannon fires specially made giant paintballs. | 0:11:31 | 0:11:34 | |
However, it should be just as adept at firing fruit - | 0:11:34 | 0:11:37 | |
in this case, a watermelon. | 0:11:37 | 0:11:38 | |
Here we go. | 0:11:38 | 0:11:39 | |
Oh, my God! | 0:11:39 | 0:11:43 | |
Unfortunately, our chosen fruit isn't tough enough to hit our | 0:11:43 | 0:11:46 | |
target, vaporising in midair. | 0:11:46 | 0:11:50 | |
We've reloaded, and it's time for shot number two. | 0:11:50 | 0:11:54 | |
Oh-ho! | 0:11:54 | 0:11:57 | |
That is how you absolutely decimate a cantaloupe. | 0:11:57 | 0:12:01 | |
OK, Matt, let's inspect our handiwork. | 0:12:01 | 0:12:05 | |
Wow, we've got damage two layers back even. | 0:12:05 | 0:12:08 | |
Wow. That was extremely powerful. | 0:12:08 | 0:12:11 | |
It's pretty impressive for a piece of fruit. | 0:12:11 | 0:12:14 | |
Cantaloupe carnage, ladies and gentlemen! | 0:12:14 | 0:12:18 | |
The long-term vision of MegaBots is to have eight, ten robots | 0:12:19 | 0:12:23 | |
drive into a stadium and, you know, attack each other. | 0:12:23 | 0:12:28 | |
It's kind of like a monster-truck rally. | 0:12:28 | 0:12:30 | |
Yeah. | 0:12:30 | 0:12:32 | |
The problem for this league idea, though, is that giant fighting | 0:12:33 | 0:12:36 | |
robots aren't exactly commonplace. | 0:12:36 | 0:12:38 | |
So there was one other piloted robot in the world that we knew of, | 0:12:39 | 0:12:43 | |
the Kuratas robot in Japan, but they said, "If we do this fight, | 0:12:43 | 0:12:46 | |
we want it to be more than just air cannons - we want melee combat." | 0:12:46 | 0:12:52 | |
"So we'll fight you, but it's got to be hand to hand | 0:12:52 | 0:12:55 | |
in the battle." | 0:12:55 | 0:12:56 | |
And so now we are creating a new robot that has melee-weapon | 0:12:56 | 0:12:59 | |
capability to be able to have this fight. | 0:12:59 | 0:13:08 | |
You're going to be going toe-to-toe and slugging it out. | 0:13:08 | 0:13:11 | |
Isn't that quite a bit more dangerous than just shooting things | 0:13:11 | 0:13:14 | |
with a giant air cannon? | 0:13:14 | 0:13:15 | |
In the ideal situation, the pilot remains protected, | 0:13:15 | 0:13:17 | |
but all of the rest of the robot can be attacked and torn off and get | 0:13:17 | 0:13:22 | |
crumpled up and destroyed. | 0:13:22 | 0:13:23 | |
The pilots remain relatively safe. | 0:13:23 | 0:13:29 | |
MegaBots' next robot is being kept under wraps for now, | 0:13:29 | 0:13:31 | |
while it's being built. | 0:13:31 | 0:13:36 | |
However, they still need to find a venue to host their robotic | 0:13:36 | 0:13:40 | |
rumble with the Japanese. | 0:13:40 | 0:13:41 | |
They're hoping this giant-bot boxing bout will take place next year. | 0:13:41 | 0:13:44 | |
Smart clothes and accessories are coming in from the cold, | 0:13:44 | 0:13:47 | |
moving from geeky to good-looking, so I've been testing | 0:13:47 | 0:13:49 | |
a few of the latest to check it's not just style over substance. | 0:13:49 | 0:14:12 | |
It's getting a bit chilly, so I was quite pleased to receive | 0:14:12 | 0:14:15 | |
this prototype, and it's quite smart. | 0:14:15 | 0:14:19 | |
In fact, its makers call it a smart coat, which could be | 0:14:19 | 0:14:22 | |
slightly over-egging it, but it does warm up, | 0:14:22 | 0:14:24 | |
and the finished product will also be able to charge your mobile phone. | 0:14:24 | 0:14:32 | |
Coats that heat up are far from new, but this brings them | 0:14:32 | 0:14:35 | |
to the high-end fashion market. | 0:14:35 | 0:14:37 | |
It uses a type of infrared that claims, instead of simply heating | 0:14:37 | 0:14:40 | |
the skin, to be absorbed by the body to help relax muscles and increase | 0:14:40 | 0:14:44 | |
blood flow, as well as keep you snug. | 0:14:44 | 0:14:46 | |
So am I walking around in more than just a luxury electric blanket? | 0:14:46 | 0:14:52 | |
The biggest concentration of the polymer is on the kidneys, | 0:14:52 | 0:14:55 | |
because that's where all your circulation runs through, | 0:14:55 | 0:15:03 | |
and once your kidneys are warmed up, all your blood warms up, | 0:15:03 | 0:15:06 | |
your circulation warms up, and it makes you feel warm all over. | 0:15:06 | 0:15:09 | |
But then we have two other parts at the front, smaller parts, | 0:15:09 | 0:15:12 | |
which give you the feeling of, you know, getting this warm hug | 0:15:12 | 0:15:16 | |
and having the warmth all around. | 0:15:16 | 0:15:18 | |
This technology wasn't created to make you feel, | 0:15:18 | 0:15:20 | |
you know, boiling hot. | 0:15:20 | 0:15:22 | |
With this, the idea is that you can regulate it depending | 0:15:22 | 0:15:25 | |
what the weather is, so if you are in the Tube and it | 0:15:25 | 0:15:29 | |
gets warm, you can just switch it off. | 0:15:29 | 0:15:31 | |
Whilst it felt luxurious and cosy to wear, seeing as I wasn't | 0:15:31 | 0:15:41 | |
overheating with it on full on a mild September day, | 0:15:41 | 0:15:43 | |
I'm just not convinced the actual coat is as thick as I | 0:15:43 | 0:15:47 | |
would like it to be. | 0:15:47 | 0:15:48 | |
Thank you. | 0:15:48 | 0:15:52 | |
Oh, four buzzes! | 0:15:52 | 0:15:53 | |
That will be a phone call. | 0:15:53 | 0:15:55 | |
This smart ring is part of a range of jewellery offering | 0:15:55 | 0:15:58 | |
customised smartphone alerts. | 0:15:58 | 0:16:00 | |
You select what alerts you would like by going into | 0:16:00 | 0:16:04 | |
the app, choosing notifications, and then selecting the categories | 0:16:04 | 0:16:06 | |
that you want to know about. | 0:16:06 | 0:16:10 | |
So it could be to tell you that your taxi's arrived, | 0:16:10 | 0:16:13 | |
get a phone call, a calendar alert, and then once you've chosen, | 0:16:13 | 0:16:16 | |
you select the number of buzzes that represent each thing. | 0:16:16 | 0:16:19 | |
This colour may not have been to my taste, but there are others. | 0:16:19 | 0:16:22 | |
The bracelets track activity too, and I actually rather | 0:16:22 | 0:16:27 | |
enjoyed its functionality, particularly as you could subtly | 0:16:27 | 0:16:29 | |
wait for a phone call. | 0:16:29 | 0:16:35 | |
And if you'd like to be subtly smart, then here is the latest way | 0:16:35 | 0:16:39 | |
of turning a regular watch into a smartwatch. | 0:16:39 | 0:16:41 | |
It's not the first we've seen on Click, but this strap aims | 0:16:41 | 0:16:44 | |
to provide notifications, activity tracking, heart-rate | 0:16:44 | 0:16:48 | |
monitoring and be waterproof, which is obviously only any use | 0:16:48 | 0:16:51 | |
if your watch is too. | 0:16:51 | 0:16:52 | |
Sadly, this prototype isn't fully functional, | 0:16:52 | 0:16:56 | |
so I couldn't test its show-stopping feature of directional push | 0:16:56 | 0:16:58 | |
navigation, where vibrations in the corresponding corner | 0:16:58 | 0:17:00 | |
of the device aim to point you in the right direction. | 0:17:00 | 0:17:08 | |
Its claimed seven-day battery life and traditional style might sway | 0:17:08 | 0:17:11 | |
some put off the current crop of smart watches. | 0:17:11 | 0:17:15 | |
And after Apple scrapped the standard headphone socket | 0:17:15 | 0:17:18 | |
on its iPhone, Bluetooth headphones may be the future. | 0:17:18 | 0:17:24 | |
If you've decided that's so, then you won't want them | 0:17:24 | 0:17:27 | |
to cramp your style. | 0:17:27 | 0:17:28 | |
There's more to this rather chunky bracelet than meets the eye. | 0:17:28 | 0:17:31 | |
Inside are a pair of Bluetooth earbuds. | 0:17:31 | 0:17:35 | |
Taking them in and out of the bracelet was pretty slick, | 0:17:35 | 0:17:38 | |
and the sound quality was good, but they didn't stay in my ears | 0:17:38 | 0:17:42 | |
as easily as the sportier buds I usually wear. | 0:17:42 | 0:17:46 | |
And when it comes to style, well, when you're wearing them, | 0:17:46 | 0:17:49 | |
the bracelet is left with a bit of a funny gap. | 0:17:49 | 0:17:52 | |
So, while some of the prototypes may still need perfecting, | 0:17:52 | 0:17:56 | |
the appetite for functional fashion is growing, so the stakes - | 0:17:56 | 0:17:59 | |
and not just the price tags - may be high. | 0:17:59 | 0:18:02 | |
Great stuff! | 0:18:08 | 0:18:12 | |
Now, after all that sunshine earlier on, we now bring you a bit of rain - | 0:18:12 | 0:18:20 | |
and not measly British rain either, we're talking hardcore Indian rain. | 0:18:20 | 0:18:23 | |
Here comes David Reid. | 0:18:23 | 0:18:25 | |
It's the end of India's monsoon season. | 0:18:25 | 0:18:28 | |
In the four months between June and late September, the country | 0:18:28 | 0:18:31 | |
receives 80% of its annual rainfall. | 0:18:31 | 0:18:37 | |
But if you think the monsoon is a relentless deluge | 0:18:37 | 0:18:40 | |
everywhere, think again. | 0:18:40 | 0:18:43 | |
For farmers in Andhra Pradesh on India's south-east coast, | 0:18:43 | 0:18:46 | |
the rains can be unreliable and cause a lot of problems. | 0:18:46 | 0:18:56 | |
Farmers need to know when and how much rain is coming to decide | 0:18:56 | 0:19:00 | |
when to sow and how to treat their crops. | 0:19:00 | 0:19:02 | |
Scientists want to help them out but can only garner very | 0:19:02 | 0:19:05 | |
little from staring at Andhra Pradesh's fleecy skies. | 0:19:05 | 0:19:07 | |
For researchers hunting for clues as to how to better | 0:19:07 | 0:19:10 | |
predict the monsoons, they're finding answers | 0:19:10 | 0:19:11 | |
in the middle of the sea, in the Bay of Bengal. | 0:19:11 | 0:19:15 | |
This summer, an Indian-led team of 24 international researchers | 0:19:19 | 0:19:22 | |
took to the high seas. | 0:19:22 | 0:19:24 | |
The scientists believe that the key to unlocking the mystery | 0:19:24 | 0:19:32 | |
of the monsoon lay offshore. | 0:19:32 | 0:19:33 | |
All the clouds that brings rain to the land over India actually | 0:19:33 | 0:19:37 | |
originate in the ocean. | 0:19:37 | 0:19:38 | |
It's the ocean that is the engine which provides the water | 0:19:38 | 0:19:41 | |
for all these clouds. | 0:19:41 | 0:19:45 | |
The power of that engine depends on the temperature | 0:19:45 | 0:19:47 | |
at the sea's surface. | 0:19:47 | 0:19:48 | |
Where it's warm, the monsoon is strong - where cold, much weaker. | 0:19:48 | 0:19:52 | |
Large cumbersome instruments permit researchers only to study the waters | 0:19:52 | 0:19:56 | |
in the vicinity of the ship, but this seaglider, brought | 0:19:56 | 0:19:58 | |
to the operation by British researchers on the team, | 0:19:58 | 0:20:01 | |
can take measurements all over the bay of Bengal, sending | 0:20:01 | 0:20:04 | |
results back to base instantaneously via satellite. | 0:20:04 | 0:20:14 | |
When we deploy gliders, we can get simultaneous measurements | 0:20:14 | 0:20:17 | |
over a set of locations within the same span of one month. | 0:20:17 | 0:20:24 | |
Likewise, how energy from the land drives the monsoon is measured | 0:20:25 | 0:20:27 | |
by towers like this one of the Indian Institute | 0:20:27 | 0:20:30 | |
of Science in Bangalore. | 0:20:30 | 0:20:31 | |
Others are dotted in arid, semiarid and wet locations around India. | 0:20:31 | 0:20:34 | |
The objective of this experiment is to understand the basic | 0:20:34 | 0:20:43 | |
physics of the monsoon. | 0:20:43 | 0:20:47 | |
Right now, we are making certain assumptions, saying that this | 0:20:47 | 0:20:53 | |
is the way that atmosphere and the land, they interact, | 0:20:53 | 0:20:55 | |
but if that assumption is not right, then obviously water | 0:20:55 | 0:20:58 | |
will not be held properly. | 0:20:58 | 0:21:00 | |
Real-time data and climate models demand processing power. | 0:21:01 | 0:21:03 | |
India's Meteorological Department has found statistics better | 0:21:03 | 0:21:09 | |
for long-term and local predictions, but next year will start running | 0:21:09 | 0:21:12 | |
models on a supercomputer. | 0:21:12 | 0:21:13 | |
This is partly because climate change has added another layer | 0:21:13 | 0:21:16 | |
of complexity to their calculations. | 0:21:16 | 0:21:20 | |
Any forecast can never be perfect. | 0:21:22 | 0:21:25 | |
When the climate is changing, the relationship which | 0:21:26 | 0:21:29 | |
the meteorologists have understood so far are also on the change, | 0:21:29 | 0:21:32 | |
and therefore we need to invest a lot of money | 0:21:32 | 0:21:35 | |
on research and development. | 0:21:35 | 0:21:43 | |
Back in Andhra Pradesh, farmers are getting some guidance, | 0:21:43 | 0:21:45 | |
partly thanks to the new data, but also because of a new | 0:21:45 | 0:21:48 | |
crop-sowing app developed by Microsoft and the India-based | 0:21:48 | 0:21:51 | |
crop-research organisation Incrisat. | 0:21:51 | 0:21:59 | |
The app gives farmers a heads-up on what's predicted | 0:21:59 | 0:22:01 | |
for their locality and then drops in advice on how to react. | 0:22:01 | 0:22:07 | |
If the crop is sown at the proper time, almost half the battle is won. | 0:22:07 | 0:22:11 | |
Using the sowing app, what we are trying to do is to send | 0:22:11 | 0:22:15 | |
advisers to the farmers, then they can start the land | 0:22:15 | 0:22:17 | |
preparation, sowing, and run various management practices | 0:22:17 | 0:22:19 | |
based on the weather. | 0:22:19 | 0:22:24 | |
Sowing on the right day can increase crop yields considerably. | 0:22:24 | 0:22:27 | |
That means more money for small-scale farmers and more | 0:22:27 | 0:22:29 | |
crops to feed India. | 0:22:29 | 0:22:33 | |
Accurate forecasting helps farmers anticipate monsoon's capricious mood | 0:22:33 | 0:22:35 | |
and make the most of their hard work. | 0:22:35 | 0:22:37 | |
That was David Reid, and that's it for this week. | 0:22:37 | 0:22:47 | |
Next week, we have something very special for you, | 0:22:47 | 0:22:50 | |
because we are off to Japan. | 0:22:50 | 0:22:56 | |
Come with us on a technological voyage of wonder and beauty. | 0:22:59 | 0:23:05 | |
We'll find out whether Japan's alternative approach | 0:23:06 | 0:23:11 | |
to autonomous cars might get them into the fast lane faster. | 0:23:11 | 0:23:14 | |
And we'll meet the people who will stop at nothing | 0:23:14 | 0:23:17 | |
in their quest for sonic perfection. | 0:23:17 | 0:23:27 | |
It's going to be brilliant, I promise you. | 0:23:27 | 0:23:29 | |
You can follow our exploits, as usual, on Twitter @BBCClick. | 0:23:29 | 0:23:31 | |
You can follow our exploits, as usual, on Twitter @BBCClick. | 0:23:31 | 0:23:32 | |
Thanks for watching, and we'll see you there. | 0:23:32 | 0:23:34 | |
Hello. | 0:23:58 | 0:23:58 | |
Friday's mixed bag of weather offered our Weather Watchers | 0:23:58 | 0:24:01 | |
a number of opportunities to get out and capture all the faces | 0:24:01 | 0:24:04 | |
of late autumn. | 0:24:04 | 0:24:06 | |
Some glorious scenes, there's no doubt about it. | 0:24:06 | 0:24:14 |