now on bbc news, reporting from the climate frontlines. it s now beyond doubt that the arctic is changing dramatically. i ve had a unique position for nearly 20 years as a witness for the bbc to the greatest challenge of our time. how we re damaging the planet so profoundly that we re turning the climate against us. it s a job that has taken me to the farthest corners of the world. i ve felt despair as extreme weather strikes people least able to resist it. i ve been attacked for highlighting the risks of global warming. and i ve also experienced hope that clever ideas and a rising generation will help us to find a way through. so, this is my story, reporting from the climate front lines. the thames barrier in london, a giant defence against the sea. it was built long before anyone worried about global warming, but things are very different now. the job of the barrier is to keep london safe from flooding, and right now, it s coming up to high tide, and the great steel gates a
the country s unemployment rate has risen since the taliban took power. it s all over in just 12 days of cricket, australia thrash england to win the ashes, after the tourists collapse in melbourne. the fourth test will begin in sydney within a week. now on bbc news. reporting from the climate frontlines for the past two decades, the bbc s science editor david shukman has been a witness on the frontlines of global warming. in this programme he explores how we got here and what it means for the future. it s now beyond doubt that the arctic is changing dramatically. i ve had a unique position for nearly 20 years as a witness for the bbc to the greatest challenge of our time. how we re damaging the planet so profoundly that we re turning the climate against us. it s a job that has taken me to the farthest corners of the world. i ve felt despair as extreme weather strikes people least able to resist it. i ve been attacked for highlighting the risks of global warming. and i ve
to extreme weather conditions. and england s hopes of an ashes comeback are fading rapidly, after a dramatic second day of the third test in melbourne. now on bbc news, reporting from the climate frontlines. for the past two decades, the bbc s former science editor david shukman has been a witness on the front lines of global warming. in this programme, he explores how we got here and what it means for the future. it s now beyond doubt that the arctic is changing dramatically. i ve had a unique position for nearly 20 years as a witness for the bbc to the greatest challenge of our time. how we re damaging the planet so profoundly that we re turning the climate against us. it s a job that has taken me to the farthest corners of the world. i ve felt despair as extreme weather strikes people least able to resist it. i ve been attacked for highlighting the risks of global warming. and i ve also experienced hope that clever ideas and a rising generation will help us to find a way t
now on bbc news, reporting from the climate frontlines. for the past two decades, the bbc s science editor david shukman has been a witness on the frontlines of global warming. in this programme, he explores how we got here and what it means for the future. it s now beyond doubt that the arctic is changing dramatically. i ve had a unique position for nearly 20 years as a witness for the bbc to the greatest challenge of our time. how we re damaging the planet so profoundly that we re turning the climate against us. it s a job that has taken me to the farthest corners of the world. i ve felt despair as extreme weather strikes people least able to resist it. i ve been attacked for highlighting the risks of global warming. and i ve also experienced hope that clever ideas and a rising generation will help us to find a way through. so, this is my story, reporting from the climate front lines. the thames barrier in london, a giant defence against the sea. it was built long before an