HumansHawking's global warnings divided opinion but the world listened The physicist was also known for his outspoken views on existential issues such as climate change. They were part of being an icon, says Geraint Lewis Comment
EarthRock dusting on farms could cool the climate, so let's try it Crushed basalt applied to agricultural land could soak up billions of tons of carbon dioxide and boost crops. Let's put it to the test, says Olive Heffernan Comment