Humans have been fascinated by twins for thousands of years. While scientists understand the egg-splitting process that creates twins, researchers aren't so sure about why it happens. Celebrate these dynamic duos with the five facts about twins below.
The modern airplane is an airborne chariot made of steel. These six facts will make you marvel at one of the most impressive technological achievements in human history.
The sun is the real star of our show — pun intended. Hanging out 93 million miles away, it's a perfect mixture of hydrogen and helium that spit-roasts our planet just right. Here are some of the most interesting things we've learned about the sun, and some of our best guesses on its future.
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