What gives paper money its actual value?

Money is just tinted paper printed with different numbers on it. So what gives the ol' greenbacks its value? The bills used to be tied to the gold standard but now, it's up to The Fed to control how many bills there are. So why can't they just decide to print out ridiculous amounts of bill to make everyone rich? » 6/24/14 1:42am 6/24/14 1:42am

Here's the simplest explanation about the Big Bang discovery in the news

If you're still a little confused about why everyone is talking about The Big Bang and gravitational waves and cosmic inflation and space and twists of light and so forth, it's okay. Much smarter people are taking care of answering those questions for humanity. But it's a big effing deal so us less wrinkled brain… » 3/20/14 1:16am 3/20/14 1:16am