Episode 286President Trump has signed executive orders pulling the US out of the Paris climate agreement, and out of the World Health Organization. Although he claims that withdrawing from Paris will save the US $1trillion a year, the reality is much less clear. As the world’s second largest emitter and amid bans on renewable energy permits, just how catastrophic is this for global climate action? Leaving the WHO raises concerns too over the future of global health action.You probably know of the placebo effect, but have you heard of the ‘nocebo’ effect? Known as the evil twin of the placebo, this is where being told something won’t work or is inferior can make it less effective or problematic. Find out how researchers have been testing it out.Last year we heard the shock discovery that oxygen is being produced in the deep ocean. Believed to be coming from metallic nodules on the sea floor, the finding could upend accepted wisdom. And now the researchers who discovered this have set out on a 3 year mission for more data. Hear about the planned research and why lead researcher Andrew Sweetman has been subjected to “online bullying”.A new exhibition at Somerset House in London is celebrating the wonder of soil, titled ‘SOIL: The World at Our Feet’. Hear from co-curators of the show, Henrietta Courtauld and Bridget Elworthy.Hosts Rowan Hooper and Penny Sarchet discuss with guests James Dinneen, Michael Le Page, Alexandra Thompson and Madeleine Cuff.To read more about these stories, visit <a href="https://www.newscientist.com/">https://www.newscientist.com/</a>Visit: <a href="https://www.somersethouse.org.uk/press/soil-the-world-at-our-feet">https://www.somersethouse.org.uk/press/soil-the-world-at-our-feet</a> Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

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Weekly: The Trump impact on climate and global health; the placebo effect’s evil twin; the mystery of dark oxygen

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