Climate models show that overturning circulation will slow down as the world warms up. The IPCC used to say it was very unlikely that it would stop in the coming century. Now it says it's pretty likely it'll go on but it's no longer being anything as categorical. More research is needed now, writes Oliver Walker. But don't think just knowing how this tipping point works a bit better is going to mean you're going to sleep better at night because it's not or at least it shouldn't.
An appalling record compared with much of the rich world is not just down to drugs and guns. We ask what changes, both in policy and philosophy, might reduce the death toll. A heat-transporting ocean current in the Atlantic could soon be on the wane—or switch off altogether (10:08). That would have disastrous consequences. And musing on airborne etiquette for business travelers (18:09).
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Runtime: 23 min