Some of the earliest animals on Earth stayed connected via networks of thread-like filaments that helped them to dominate the planet's oceans about half a billion years ago.
A wireless telegraph machine, sometimes called the "voice of the Titanic" for its role in sending out distress messages on the fateful night in 1912 when the RMS Titanic cruise liner hit an iceberg, could be recovered from the shipwreck lying at the bottom of the North Atlantic.
Winter's chill recently turned Lake Erie into "Lake Eerie," as frigid temperatures transformed a trio of lakeside houses in Hamburg, New York, into unsettling ice sculptures. The frigid cold and wind sealed the homes inside thick layers of solid ice, topped with still more frozen layers of wavy icicle "hair."
The South Australian coast is surrounded by a labyrinth of underwater canyons, many of them still unexplored. Last week, an international team of researchers (and their underwater robot companion) completed a survey of three such canyons, uncovering a hidden world of both thriving coral gardens and ash-white coral graveyards.
A gigantic asteroid almost as large as Mount Everest is zooming toward Earth next month, but NASA says not to worry -- it's not expected to collide with our planet.
As NASA gets set to send a rover to Mars next year, a newly released picture of what appears to be an "underground cavern" on the Red Planet is raising questions.