EnvironmentWarm water seeping under Antarctic ice sheets may accelerate melting As ice melts beneath Antarctica, warm ocean water can intrude further inland and set off more melting, in what researchers say is an unrecognised tipping point 51¶¯Âþ
SpacePlanets that look alike might be a sign of spacefaring aliens We don’t know what alien life might look like, but if other civilisations can colonise multiple worlds, we might see planets that look unusually similar 51¶¯Âþ