Here's an interesting article from the BBC that details how researchers used tags to track eels' migration. Scientists found the eels use ocean currents to help them zip to a seemingly impossible destination and back. They swim out of their way to find the currents that will sweep them across the Atlantic. I think it's a good reminder to all of us that often we have to think differently - sometimes zig-zagging - to attack a problem that at first appears unsolvable. —Martha