In 1924 an Australian anthropologist and anatomist, Raymond Dart, acquired a block of calcified sediment from a limestone ...
Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the ...
This week, explore decoded words from charred ancient scrolls, meet heroic frog daddies, see Grand Canyon-size lunar features ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results