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Babbage: Keeping it cool

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Solar geoengineering has the potential to help counteract global warming, so why are scientists so cautious about it? Host Kenneth Cukier also explores a new, green idea that could revolutionise air conditioning. And our obituaries editor remembers Steven Weinberg, a Nobel laureate in physics who united two of the known forces in the universe.

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Biden Says 'Buck Stops' With Him; Blames Trump, Afghan Leaders & Military

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Jamie Kaler – #2038-1