Ten things you don’t know about the Earth

I stumbled across this link from Discover.com on Fark.com.

There are a few too many exclamation points in the article, but it's quite interesting.

So the Earth is smooth enough, but not round enough, to qualify as a billiard ball.

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Most people think the Earth has one natural moon, which is why we call it the Moon. These people are right. But there are four other objects — at least — that stick near the Earth in the solar system. They’re not really moons, but they’re cool.

The biggest is called Cruithne (pronounced MRPH-mmmph-glug, or something similar)
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I didn't know about these other moon-like-but-not-quite objects. It looks like I have some reading to do.