For what they were... we are

Happy new year, by the way. I want to call your attention to a post by Razib in which he reviews a new paper on the archaeology of transi...

An ancient major lake that would have appeared some 250,000 years ago and vanished definitively some 80,000 years ago has been discovered ju...

Deposits of soluble minerals under the wheels of the trapped Mars rover but not in the upper layer support that water existed in liquid form...