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CBS News - A leaked UN report warns 'worst is yet to come' on climate change.

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A leaked draft report from the United Nations' Intergovernmental Panel on Climate Change paints the starkest picture yet of the accelerating danger caused by human use of coal, oil, and gas. It warns of coming unlivable heat waves, widespread hunger and drought, rising sea levels and extinction. To understand the report's warnings, William Brangham turns to atmospheric scientist Katharine Hayoe.

Fine-tuning the climate | DW Documentary

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Dangers and solutions to our current climate crisis Engineers and scientists are trying to intervene in the Earth’s geochemical cycles. Because it appears efforts to cut CO2 won’t suffice to avoid irreversible climate change. Some scientists believe that we need to explore radical, and perhaps dangerous, technologies in order to be able to lower the earth’s temperature through geoengineering in the near future.  Science journalist Ingolf Baur explores the feasibility and risks of leading geoengineering projects. His journey takes him to meet scientists in Switzerland, Iceland, the US and Peru. Along the way, he encounters two very different strategies: One is to fish climate-damaging CO2 from the atmosphere and sink it underground or in the deep sea. The other, and this is the far more controversial strategy, seeks to develop techniques that dim sunlight. Global warming is causing entire mountain ridges like the Moosfluh above Switzerland’s Aletsch Glacier to break off. Such dramat...