Published April 20, 2011
Explore zoomable maps of the U.S. Gulf Coast to see which beaches were hit worst by the oil spill last summer and how they're faring now. (Also see: "Gulf Oil Spill Anniversary: Hard-Hit Beaches Mostly Oil-Free.")
Mouse over the images to access zoom tools. "Home" icon returns picture to fully zoomed-out view.
NASA's "eyes in the sky" tracked Monday's tornado as it moved through Moore, Oklahoma.
These six scientists were snubbed for awards or robbed of credit for discoveries … because they were women.
Scientists say they've learned why penguin wings, now used for swimming, no longer get the birds off the ground.