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Every additional .5 degrees will cause increases in the intensity and frequency of hot extremes, heavy precipitation and drought. at 2 degrees of global warming, heat extremes with more often reach critical thresholds for agriculture and human health. at a global scale, extreme daily rainfall events intensify by about 7% for each additional degrees celsius of global warming. as you see. the future changes depend future human influence. now let's go back to where we are today...

With every additional amount of global warning... this major study concludes that temperatures are rising and that it's beyond doubt that human activity is driving them up. and all the warnings so far have been ignored. the world listened, but didn't hear. but it didn't act strongly enough. and as a result, climate change is a problem that is here now. nobody's safe, and it's getting worse faster. people in every region of the world are now feeling the impacts of more violent weather, fuelled by the gases that we release into the atmosphere. it is an absolute facti that human influence is warm...

But if we don't enact the policies and pledges that we already have in place, and in fact if we don't make those stronger, then we won't meet that target. political attitudes are changing. the uk is getting electric cars, for instance. we need clean technology for home heating too. in the words of one leading scientist, we're not doomed, but if we want to avoid catastrophe, we have to drastically cut emissions — now. roger harrabin, bbc news. let's speak to our science editor david shukman. this editor david shukman. could not be a more stark warning, this could not be a more stark warning, ...

U.n. report claims climate change is to blame and is now irreversible for centuries or millennia because of humans. they called it a code red for humanity. >> what's new in this report is we can attribute many more changes global and regional level human influence. >> the report states that global temperatures have already risen by 2 trees since the 1st century reaching highest in over 100,000 years. but some experts have cast doubt on its conclusion. >> those kinds of extreme events are on the face of it weather. if it were climate we will see trends over several decades in those phenomena an...

Temperatures. and the world's smallest baby — more than a year later, this little girl finally leaves hospital here in singapore. live from our studio in singapore. this is bbc news. it's newsday. hello, and welcome. it's 7am in singapore, and midnight in london. global warming is accelerating, and human influence is to blame — that's the warning from a damning new report from the un and its secretary general. antonio guterres says the evidence cannot be denied — greenhouse gas emissions from fossil fuel burning and deforestation are choking the planet and putting billions of people at i...