SpaceMercury may have gained all of its unexpected water in a single day Despite being the closest planet to the sun, Mercury has thick deposits of ice at its poles, and now we may understand the events that formed them over just one Mercurian day News
LifeWe may finally know why dinosaurs like T. rex evolved tiny arms Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so because their heads became so large and powerful News