AP - Scientists unearthed a skull of the most primitive four-legged creature in Earth's history, which should help them better understand the evolution of fish to advanced animals that walk on land.

AP - Why is Mars two-faced? Scientists say fresh evidence supports the theory that a monster impact punched the red planet, leaving behind perhaps the largest gash on any heavenly body in the solar system.

AP - Government scientists are launching a five-year project Thursday aimed at safeguarding the world's chocolate supply by dissecting the genome of the cocoa bean.

AP - Reeling in a 45-pound grouper used to be just an average day on the water in the Florida Keys. The abundance of behemoth fish attracted anglers from around the world in the early 1900s, including adventurers such as Ernest Hemingway and Zane Grey, who pulled in monsters from the clear, warm depths off Key West.

Reuters - A new round of storms dumped a half foot or more of rain across parts of the U.S. Midwest on Wednesday, dealing fresh trouble to a region already struggling with billions of dollars in flood damage.

AFP - Individual human genomes change throughout a person's life influenced by environmental or nutritional factors which may explain why illnesses such as cancer come with age, a study said Tuesday.

AFP - The International Whaling Commission agreed Tuesday to put off votes on a Japanese bid to resume commercial whaling and an environmentalist initiative to create a whale reserve in the South Atlantic.