Dark energy is the mysterious force recently discovered to make up 73% of the universe's energy and cause its expansion at an accelerating rate, yet scientists admit they hardly know anything else about.

In the recent global financial meltdown, "too big to fail" emerged as both a catchphrase and policy that described the biggest banks and corporations that governments would single out as having to be bailed out with taxpayers' money due to their size lest their collapse drag down with them the whole international financial system.