We live in a base-10 world. The decimal system governs everything from the binary functions of computers to the amount of change you get when you buy a Mashed Potato Slurpee. So why isn't the standard Earth day just 10 hours long? Credit the Egyptians for that one.
For decades, paleontologists have agonized over a strange Sumerian statue found in central Iraq. The figurine depicts a mammal that some researchers suspect could be a suriving specimen of the ancient giraffe, Sivatherium.