The eye chart with the big "E" on top is called a Snellen Chart.
Look! Up in the sky! It's a bird ... it's a plane ... it's a Selenops.
Get up close and personal with the 25th president's final resting place: a 96-foot tall memorial in Canton, Ohio.
Forty years ago, the Sweathogs arrived for class.
The reality behind the reflex.
Scientists have discovered the missing piece in Knut's tragic story.
A peek inside the zaniest toy factory in American history.
The makers of the Hula Hoop would also like to interest you in a bomb shelter.
A little peer pressure goes a long way in the chemistry world.
Iron-rich brine from a subglacial lake accounts for Blood Falls' creepy crimson hue.
Japanese architect Ryue Nishizawa designed a five story townhouse covered in plantlife.
This eruption—one of the most powerful and devastating eruptions in modern history—had effects worldwide.
Staring into someone's eyes for 10 seconds? Romantic. Staring into someone's eyes for 10 straight minutes? Kind of creepy—and, apparently, hallucinogenic.
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