Well, there's a problem with having a bunch of geologists look at these types of all-red images: though Mars has many of the same types of rocks that we have on Earth, they don't look the same there.

A new light blue hot spring has formed in Yellowstone’s Norris Geyser Basin after months of small hydrothermal explosions.

Michael Sanchez's photos of what appears to be a rare blue rock thrush recently has made him the envy of the birding world.. It's the kind of discovery most avid birders wait their whole lives to ...

Blue rock thrush is among rarest in U.S. Experts say they are confident that the bird in the photo will soon be confirmed as a blue rock thrush, making Sanchez's find exceedingly rare.