5 Most Incredible Discoveries of the Week

This week: Stonehenge gives up another of its secrets, and your cat may see things you just can't.

• Source of Stonehenge's Rocks Pinpointed: For nine decades, it's been established that many of Stonehenge's smaller rocks hail from the Preseli Hills in Wales ... but we may have been wrong about the specific location in those hills. And the new research suggests the rocks may not have been transported to their final destination by humans at all.
• Cats May See Things That Are Invisible to Us: If you saw the world through the eyes of your pet, you'd very likely be seeing a lot more than you currently do. That according to new research that has found that cats, dogs, and select other animals may be able to see things that are invisible to the human eye. As for what they're privy to that we're not, it's both appetizing and not.

• Newly Found Species' Males Killed by 'Frenzied' Mating: As far as newly discovered species go, this is an unusual one. Australian scientists have identified a new kind of antechinus, a mouse-like marsupial with some odd notoriety: The males die before their first birthday—due to the "extreme stress" of their "frenzied mating."
• Scientists Build a Better Potato: It's about 175 years late for those who perished in the Irish Potato Famine, but British researchers think they've created a potato resistant to blight, with the help of a South American spud.
• Elephants Console Each Other: Elephants not only recognize when a member of their group is stressed, they offer comfort in the form of reassuring touches and chirping noises. The trait is a rare one among animals, with dogs and we humans among the few that exhibit it.

Click for more incredible discoveries, including one about Yellowstone. (More discoveries stories.)