If Charlie Day got paid per meme, he would be able to retire on this one alone. In this video, the 'It's Always Sunny in Philadelphia’ star reacts to his iconic red string meme from Season 4, Episode ...

Add Yahoo as a preferred source to see more of our stories on Google. If Charlie Day got paid per meme, he would be able to retire on this one alone. In this video, the 'It's Always Sunny in ...

String theory attempts to unify general relativity and quantum theory. Popular in the 1990s, string theory fell out of favor as it failed to provide testable predictions and required ten dimensions ...

Physicists may have uncovered a surprising new clue that string theory—the idea that the universe is built from unimaginably tiny vibrating strings—could be more than just a mathematical fantasy.

If you could take an apple and break it into smaller and smaller parts, you would find molecules, then atoms, followed by subatomic particles like protons and the quarks and gluons that make them up.

There’s no doubt that cats are feisty, adorable and curious animals. Their independent and mischievous nature (combined with some seriously funny quirks) certainly keeps their owners on their toes—and ...

One startup founder who helped spread viral memes about capital gains tax reforms says the campaign was aimed at attracting attention after the budget. The prime minister jokingly thanked startups for ...

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