PhysicsPhysicists reveal the secret to chopping onions without crying Slicing an onion releases tear-inducing chemicals into the air, but the sharpness of the knife and the speed of the cut can affect how these droplets are expelled News
LifeFossil tracks rewrite history of animals leaving water to live on land The footprints of a reptile-like creature appear to have been laid down around 356 million years ago, pushing back the earliest known instance of animals emerging from the water to live on land News