As of 2011, gamers have collectively spent over 6 million years playing World of Warcraft. That's almost as long as the existence of the human species!
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Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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A blind American man taught himself to navigate using echolocation. His hobbies include hiking and mountain-biking, and he has now trained over 500 students in his ‘tongue-click’ technique.
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