Thunderstruck!

Ah, Spring! You've finally arrived and you've brought nature's light show with you. Reader Ryan B. wrote to us late last night: "I just witnessed the Sears Tower being struck by lighting five times. All five on the west antenna. The light on top of the antenna was taken out on the first strike. I could see three or four sparks from each lightning strike." And Flickr pool contributor stephenwrainey gives us this pair of gorgeous shot as visual accompaniment.