| The leftover remnants of a meteorite that smashed into Earth 15 million years ago could give new insight into Mars' past, including its oceans and whether it ever supported life. |
| A rare 1776 Continental dollar that was bought at a French flea market for less than $1 is worth nearly $100,000. | A hand grenade from World War I was recently discovered on a beach in the U.K. after a series of storms unearthed the object. |
| Snow that looks like it was mixed with food coloring is not what you'd expect to see in Antarctica -- or anywhere else, for that matter. | A stunning image showing a group of seals swimming in sync beneath an Antarctic iceberg has captured a major photography award. |
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