SpaceHow worried should you be about an asteroid smashing into Earth? The dinosaurs were wiped out by an asteroid, but does that mean we risk suffering the same fate - and should you be worried about the possibility? Leah Crane sets the matter straight Analysis
EnvironmentSeaweed could save a billion people from famine after a nuclear war A nuclear war could lead to food shortages due to soot blocking out the sun, but a model suggests seaweed farming could expand to meet up to 15 per cent of the food eaten by humans News