in siberia to reach remote corners of permafrost. enduring the toughest conditions. watch what happens to this weather balloon in a polar storm. understanding how the world is changing is a complicated challenge. for me, it began with a descent into antarctica. i m climbing down into a crevasse, and it s by getting down into the ice and drilling into it that scientists are able to build up a picture of the greenhouse gases that have been building up in our atmosphere. they find bubbles like this trapped in the ice and analyse the air inside them. the ice holds a record of the climate, trapping carbon dioxide year after year, so we can see how it s risen and fallen. but the next step is working
understanding how the world is changing is a complicated challenge. for me, it began with a descent into antarctica. i m climbing down into a crevasse, and it s by getting down into the ice and drilling into it that scientists are able to build up a picture of the greenhouse gases that have been building up in our atmosphere. they find bubbles like this trapped in the ice and analyse the air inside them. the ice holds a record of the climate, trapping carbon dioxide year after year, so we can see how it s risen and fallen. but the next step is working out our role in that, the human fingerprint on global warming, and that involves more recent data.
will expand the deserts. needing an armoured vehicle in siberia to reach remote corners of permafrost. enduring the toughest conditions. watch what happens to this weather balloon in a polar storm. understanding how the world is changing is a complicated challenge. for me, it began with a descent into antarctica. i m climbing down into a crevasse, and it s by getting down into the ice and drilling into it that scientists are able to build up a picture of the greenhouse gases that have been building up in our atmosphere. they find bubbles like this trapped in the ice and analyse the air inside them. the ice holds a record of the climate, trapping carbon
understanding how the world is changing is a complicated challenge. for me, it began with a descent into antarctica. i m climbing down into a crevasse, and it s by getting down into the ice and drilling into it that scientists are able to build up a picture of the greenhouse gases that have been building up in our atmosphere. they find bubbles like this trapped in the ice and analyse the air inside them. the ice holds a record of the climate, trapping carbon dioxide year after year, so we can see how it s risen and fallen. but the next step is working out our role in that, the human fingerprint on global warming, and that involves more recent data. getting to it
understanding how the world is changing is a complicated challenge. for me, it began with a descent into antarctica. i m climbing down into a crevasse, and it s by getting down into the ice and drilling into it that scientists are able to build up a picture of the greenhouse gases that have been building up in our atmosphere. they find bubbles like this trapped in the ice and analyse the air inside them. the ice holds a record of the climate, trapping carbon dioxide year after year, so we can see how it s risen and fallen. but the next step is working out our role in that, the human fingerprint on global warming, and that involves more recent data. getting to it took a long journey to hawaii and up an old volcano. at the summit lies