Skip to main content

tv   Review 2021  BBC News  December 25, 2021 12:30am-1:01am GMT

12:30 am
coronavirus cases since the pandemic began, with more than 120,000 new infections. european countries reported record numbers of cases, with italy, greece and spain introducing mandatory face coverings outdoors. but 0micron appears to result in serious illness than delta. millions around the world face travel disruption over christmas as the surge in 0micron variant cases sees 2000 flights cancelled due to staff shortages. united airlines says it's contacting impacted passengers before they arrive at the airport. china and the us are the worst affected countries. christmas celebrations have taken place in bethlehem, including an annual procession led by the head of the roman catholic church in the region. now on bbc news, review 2021 —
12:31 am
the year in science. 2021 was the year that world leaders agreed on a new plan to save the planet. hearing no objections, it is so decided. scientists warn that it was now or never to stop damaging climate change. the difference between 1.5 and 2.4 is really survival of millions and millions of people and species in the planet. environmentalists chopped down trees to save the planet. nasa's perseverance
12:32 am
rover landed on mars. and there was a discovery of what might be another fundamental force of nature. welcome to the year in science. the earth's climate dominated this year in science. for a long time, scientists have warned that our current way of life would lead to dangerous and possibly irreversible damage to the earth's ecosystems. world leaders gathered at the un climate change conference were told now is the time to act. ready to start.
12:33 am
world leaders gathered in glasgow in november to hammer out a deal to reduce carbon dioxide levels to stop dangerous global warming. and one of the biggest disputes was over the future of coal. for a while, it looked like negotiators couldn't reach a deal. then, the man at the centre of the talks, alok sharma, had to appeal to all the parties to cooperate. this is a moment of truth for our planet. and it's a moment of truth for our children and our grandchildren. it did the trick. an agreement was reached. by the end of 2022, countries will have to update their climate pledges at a faster pace than before. by 2024, a package of long—term financial aid for the poorest nations have to be agreed. and then, by 2030, to avoid the worst of global warming, carbon emissions should be halved. but that will be made harder by china and india's insistence that coal should be phased down
12:34 am
rather than phased out. so, as things stand, polar ice will still melt faster than ever, raising sea levels and together with heavier rain, threatening millions of people with flooding. we've already warmed by 1.1 degrees since preindustrial times. world leaders said that by limiting the rise to 1.5 is still possible, but projections say we're headed for 1.8 and that if is only of every promise is kept. more realistically, we are on course for degrees, a dangerous level. the difference between 1.5 and 2.4 is really the survival of millions and millions of people and species in the planet. this is what is particularly true for the islands. but according to a government
12:35 am
adviser at the heart of the talks, the worst outcomes can be averted. we have kept 1.5 alive, but on the basis of delivering on those commitments. and that'll be our next task and this is for all the countries, and it's on us to make sure that this is real. and sir david attenborough said the richest nations had a moral responsibility to help the most vulnerable. it would be really catastrophic if the developed nations - of the world, the more powerful nations of the world simply - ignored these, these problems. if we say, it's nothing to do and cross our. arms, we caused it. thousands of men, women and children who've lost i everything, lost everything, can we just say it's - no business of ours? an assessment by the environment agency said that the uk was not yet ready for the impact of climate change.
12:36 am
in october, a street in cardiff became a dangerous river after a massive downpour. there was a similar scene in newcastle after torrential rain there. in america, europe, south america and siberia, there were raging wildfires. the biggest shock came in germany injuly. as a surge of water tour through communities. 200 people were killed. the weather events that we saw in europe this summer could happen here in england, and we need to be ready. to save lives. we need to recognise that it's adapt or die.
12:37 am
young people were involved in protests across the world as they have the most to lose if we fail to get the impact of climate change under control. they're also the ones who can fix the problem. 5000 of them were involved in a scheme to understand and help solve the environmental crisis. we're measuring plants to see how they're growing outside. we've been learning about worms. - this is mustard powder. you're going to mix the mustard powder into the water. this one is about learning the role of worms. these are babies. 0k? baby worms! these are the scientists of tomorrow. they've got to think about their future and their children's future and it's a long—term game. this is not something for a single generation, we have all got to play our part.
12:38 am
other projects involve growing nature—friendly food. it's so important. it's a matter of our lives now and i think it should be important to everyone, and this is why we've started the outdoor learning area so that we can protect the environment and stop climate change. the young researchers took what they discovered and presented their work to the politicians at cop26. there was a new award for those trying to save the planet called the earthshot prize. its name is a reference to america's moonshot. an ambitious programme to get an astronaut on the lunar surface.
12:39 am
but more than 50 years on, prince william told the bbc saving the earth was an even bigger challenge. we need some of the words greatest brains and minds fixed on trying to repair this planet, not trying to find the next place to go and live. but many scientists are the choice between earth but many space scientists say the choice between earth and space is a false one. the science museum gallery celebrates the heyday of space travel in the 1960s and �*70s when humans went to the moon. and it was that, they say, that helped draw attention to the planet's environmental plate. to the planet's environmental plight. but, for many, it's the beautiful images from space that most inspires. no more so than the pictures from the hubble space telescope. for more than 30 years, it's captured distant galaxies, stars being born and dying.
12:40 am
images that have been as uplifting to the soul as they have been to the mind. hubble�*s successor is nasa's james webb telescope. unlike hubble, the £7.5 billion spacecraft will go beyond earth's orbit. 930,000 miles into deep space. once in space, it unfurls its sunshield and deploys its giant mirror and instruments. the space telescope is much more powerful than hubble, and it'll be able to analyse the atmospheres of worlds
12:41 am
orbiting distant stars to see if there are signs of life. it'll also be able to witness the birth of the very first stars. this is a simulation of that critical moment. the purple areas are clouds of hydrogen gas becoming ever denser until they form stars. blazing like fireworks. james webb is expected to capture images of this really happening. i'm so excited! why are you so excited? isn't that just fantastic that as humanity, a tiny little civilisation on planet earth, that we can create a telescope that peers up into space and peer back to the universe as it was just a couple of hundred millions of years after the big bang. and some incredible views from space were obtained
12:42 am
from these aerials planted in a small field in hampshire. these pick up radio waves from distant galaxies. they may not look like much, but astronomers have connected 52 sites just like this one spread all across europe. together, they've captured some of the most detailed pictures from space ever taken. in this image, the galaxy is in the middle. shooting out either side arejets of material across the expanse of space. it's because of a gigantic black hole inside of it. astronomers can now see things they've never been able to see before. this is a picture of a galaxy seen through a normal telescope. and here is a standard radio image of it. although it's a lot brighter, a lot of the detail has been lost. now compare it with one of the new high—definition images, which is much sharper, showing features inside in
12:43 am
unprecedented detail. the brightest area at the bottom shows the location of a gigantic black hole inside this galaxy. it's bright because of the energy released as it's sucking in material around it. meanwhile, in the deserts of chile, a telescope was able to see the universe as it really is. filled with the mysterious substance called dark matter. it can't be seen, but this instrument detected dark matter by the way it distorts starlight. this is a map of matter in the universe. astronomers produced this map of how it spread across the cosmos. it permeates space, accounting for most of the mass of the universe. the brighter areas are where dark matter is most clumped together. it's here that galaxies form. it's our reality shining like gems on an unseen tangled cosmic web.
12:44 am
but the map is not what astronomers expected. according to einstein's theories, the matter should be slightly more clumped together. instead, it's smoother and more spread out. building on the work of einstein, carlos frank was among the scientists who developed the current theory of cosmology. hearing now that there may be something not quite right with the theory is very disconcerting. it's very alarming. and, in a way, frightening. to see that maybe my whole life's work might crumble in front of me. but at the same time, it is immensely exciting. back in our own solar system, nasa's perseverance rover landed on mars. first look at the surface.
12:45 am
these pictures are the spacecraft during the final few minutes of descent. as it nears the surface, clouds of dust and grit are thrown around as its thrusters are fired. from another camera angle, we can see the vehicle lowered to the ground. safely on the surface of mars! these were the scenes from mission control. shortly after, a thoughtful tweet from the rover. it's been drilling into the surface and storing some of the rocks for a future mission to bring back. some of the samples may contain fossilised evidence of life. i am not talking about martian little green men. we're looking for microbial life or microbes that made a mat or a slime that you might find at the bottom of a pond. those are the type of things that are likely to, well, they did exist on a three
12:46 am
billion years ago. the question is, did they exist on mars at the bottom of lakes? 0n—board is a small helicopter, ingenuity. which carried out the first of a powered flight on another planet. back on earth, and boldly going where hundreds of people had gone before... star trek�*s captain kirk, william shatner, blasted off from a launch site in texas. it was a ten—minute flight to 60 miles above the earth, but enough time to float in zero gravity. waiting for him on his return, amazon founderjeff bezos asked whose company developed the rocket system.
12:47 am
what you have given me is the most profound experience i can imagine. i'm so filled with emotion about what just happened, ijust... it's extraordinary. at the age of 90, william shatner finally reached the final frontier. in physics, there was what could be one of the biggest steps forward for a generation. scientists believe that there are four fundamental forces of nature. one for gravity, another for electricity, and two nuclear forces which control the behaviour of atoms. together, they explain the way the world works, but in recent years, astronomers began noticing things in space that can't be explained by the four forces, such as galaxies spinning faster than they should. and they can't
12:48 am
explain why the stars and planets and everything on them, including us, exists at all. the new results suggest there might be a fifth force which could explain some of these mysteries. the result was from fermi lab, a particle accelerator from just outside chicago. scientists accelerated particles inside this giant ring close to the speed of light. and they found something that cannot be explained by the current theory of physics at the subatomic level. i think it's quite mind—boggling and has the potential to turn physics on its head. and we have a number of mysteries that remain unsolved, and this could give us the key answers to solve those mysteries. you've heard of electrons, well, there are similar particles called muons, which are much heavier and spin like tops. in the experiment, they were made to rotate using magnets. the current theory states that they should rotate at a certain rate. instead, they rotated faster.
12:49 am
this might be caused by a mystery force, a fifth force which is created by another, yet to be discovered particle. in february, a meteorite blazed across the night sky over the rooftops across the uk. a large chunk of it landed in the driveway of this family living in gloucestershire. i came out, and we looked at this pile of what looked like crushed coal. and so we started even then thinking perhaps it's come down from space. security camera footage captured the flight of the meteorite as it flew over nuneaton, somerset, wigan before it ended up at the natural history museum for study. it is one of the most pristine materials that we have on earth to study, and the thing that is really good about this particular case is that we saw it fall.
12:50 am
and so we can use that to track back the trajectory and work out where in the solar system it came from. a study from the natural history museum found that the uk is losing biodiversity so quickly that it's now one of the most nature—depleted places in the world. that's important because there are rare long—lost species that could be better suited to the extreme conditions caused by global warming. many of the crops we depend on such as this coffee plant won't thrive due to the increased temperatures predicted by climate change. but these beans from 1873 could provide an answer. they're found in the collections at kew gardens here. not only are they more heat—resistant, but they make an excellent brews, with tones of honey and blackcurrant, apparently. it's one example of many of how science, rather than taking us away from the natural world, is bringing us closer to solutions for some of humanity's greatest problems. millions of tonnes of sand
12:51 am
were shifted to a stretch of coastline in north norfolk to see if a natural barrier could hold back rising sea levels. it seems to have worked. the homes and businesses are on the front line of rising sea levels. the sound barrier idea is cheaper than building a concrete seawall. this more natural solution could be used to protect more coastal communities. we're making space for water, so allowing natural processes to come back in places where we can do this. i think that's the attitude we need to have and that we're going to be able to keep building sea walls and defend, defend, defend. in 2021, nearly 60 acres of trees were cut down in northumberland. to reduce carbon emissions. it sounds strange, but it was done to save an ancient peat bog which traps far more carbon
12:52 am
than trees ever could. the building blocks of the peatland arej the stagnant masses - which themselves, like this one, are absolutely full of water. - they're about 90% water. and that water is why bogs are better at slowing climate change than trees. when plants die in a bog, they don't release all their carbon into the atmosphere because they don't rot completely. which is why this... good for the environment. there's greater diversity among science students than ever before. but an analysis in march by the royal society showed that there was an unacceptably low number of black people
12:53 am
among academic staff. 6.3% drop out of their postgraduate studies. that compares to just 3.8% of students. black people account forjust 1.7% of research staff in the uk, whereas they make up 3.5% of the population. and out of 22,745 professors in academia, 155 are black. we know something's happening within the university. it's that culture that can be quite toxic. it's due to racism, all the statistics show it's not due to class, it's due to what school you went to, and that environment and that culture is carried on all the way through the student life cycle and into careers as well. in an effort to attract
12:54 am
more ethnic minorities, a series of projects were launched across england to encourage them to phds and to support them throughout their research careers. there was a surprising discovery at canterbury cathedral. inside, its stunning windows depict symbolic religious scenes. this series was thought to have been made on the 13th century. but researchers discovered that some of the panels, including this one of the prophet nathan, were made much earlier. it's only come to light now because of this device, called a windowliser. it may not look like much, but it was developed
12:55 am
by scientists to be used on location without damaging the glass. it shines ao beam onto the surface and causes material inside to radiate. this radiation contains a chemicalfingerprint to allow researchers to work at their age. same as we have been working on this detective story for some time, putting all the pieces in place, and then we finally get an answer, something new that brings together science and art into one story. it's fantastic. these are all that were recorded at the time they happened here. the discovery astonished leone, who looks after stained glass windows, inevitably the related panels could go back to the mid—1100s and were replaced during the great historical events at the cathedral, including the assassination of the then archbishop thomas becket, who features in many of the windows. they would have witnessed the murder of thomas becket. henry ii come on his knees begging for forgiveness. they would have witnessed the conflagration of the fire that devoured the cathedral in 1174. and then they would have witnessed all of british history.
12:56 am
there's a lot more in store next year in science. the large hadron collider will restart at its highest power ever. the james webb telescope will send back its first data, which may include pictures of starlight in the universe. and europe and russia will send a rover to mars' surface to search for signs of life. but it's the climate we will need to focus on. its changing climate means that the planet's fate hangs hangs in the balance, but science can provide of the solutions and give us hope for the future. hello there. merry christmas to you. some of us will see some snow during this christmas period, mainly across the hills of the northern half of the uk. further south, it'll tend
12:57 am
to be milder, so any precipitation will be rain. and we've got areas of low pressure pushing into the south west, and they're weather fronts bringing outbreaks of rain. as these weather fronts slowly push north—eastwards into that stubborn area of colder air which is sitting to the north—east of the country, then this is where we're likely to see some of that rain turn to snow. so, we're starting christmas day morning off on a very cold, frosty note across scotland, the far north of england, but less cold, milder for northern ireland in towards wales and the south west. but here, we have more of the cloud, outbreaks of rain, which will be slowly spilling northwards and eastwards through the course of the day. quite a bit of cloud for most of england, but the far north of england, scotland off that cold, frosty start, will be dry and sunny throughout the day. maybe just the odd wintry shower around, some patchy cloud, but it will be windy, particularly across the northern half of the country, as you can see here. these are the mean wind speeds. so, when you factor in the wind with that cold air, it really will feel chilly, colder than these temperatures suggest, 3—5 degrees in the north, seven to maybe 11 degrees across the south and south west. now, as we head through
12:58 am
christmas day evening, it looks like the rain will start to push its way northwards and eastwards, and overnight, as it bumps into that cold air, we could see a bit of snow for north wales on the hills first, and then into northern england, central, southern scotland, mainly over the pennines, across the southern uplands and the higher ground of central scotland. quite a covering here, maybe even some down to lower levels for a time. you can see it's going to be another cold night here, less so further south and west. so, some places on boxing day starting off with that snowfall, across the north pennines, into the southern uplands, perhaps into central scotland, but through the day, any snowfall will become reserved to the hills of northern scotland as the milder air begins to push its way northwards. quite a lot of cloud generally across the country. we could see some brightness, a few showers pushing into northern ireland, wales and the south—west quadrant of england, where it'll be mild again. but still chilly across the far north east. then, as we move out of boxing day to the run—up to new year's eve, we can see some really mild air starts to move in, and right across the uk on a south—westerly wind, pushes all that cold air
12:59 am
well away from the uk. so, it turns milder even. very mild for a time in places in the run—up to new year's eve. but with that, it will be unsettled, some areas seeing some spells of wet and windy weather.
1:00 am
this is bbc news. i'm simon pusey. our top stories: after the glimmer of hope, more gloom with the highest daily recorded cases of covid since the pandemic began. millions of travellers around the world face disruption over christmas as the surge in 0micron cases means cancelled flights and staff shortages. a christmas midnight mass is celebrated at the church of the nativity in bethlehem, built on the spot where it's believed jesus was born. the queen is expected to give a very personal christmas message this year — her first since the death of her husband prince philip.
1:01 am
hello and welcome to bbc news.


info Stream Only

Uploaded by TV Archive on