NASA/CXC/Columbia Univ./C. Hailey et al. For the first time in history, earthlings can hear what a black hole sounds like: a low-pitched groaning, as if a very creaky heavy door was being opened again ...

Common Loons Prepare for Takeoff To heft their bodies into the air, loons need a long runway, much like an airplane getting ready for a flight. These loons require as much as 600 feet of open water ...