The hunt for Planet 9
Beyond Neptune, a few small worlds are moving in harmony. Is a huge ninth planet pulling them around?
Eco-cities
With overpopulation and climate change taking their toll on our cities, engineers and urban planners are dreaming up some innovative ways to live.
Shock therapy
Does electroconvulsive therapy offer a life-saving treatment?
Plus
- Richard Dawkins chats about faith, flat-Earthers and Facebook.
- Should we stop having kids to save the planet?
Issue 340 on sale 4 September 2019
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