Life As We Do Not Know It: The NASA Search for (and Synthesis of) Alien Life

He is the new broom, and he can sweep clean.

Guests who stay at the Hilton are paying premium dollars for a safe, secure, well-run hotel, and they deserve to have that. I don't know what's worse, all the Hilton violations or the way they keep covering them up.

Changes in oxygen may have been a huge driver for mammalian evolution. Nature is so damned complicated.

It doesn't surprise me -- gold is facing some big problems.

Gorgon: The Monsters That Ruled the Planet Before Dinosaurs and How They Died in the Greatest Catastrophe in the Earth's History