petawatt

4 ms·

1. 1.▲
   by petawatt 11y ago

   Race officials are always looking for possible cheating.
2. 2.▲
   by petawatt 11y ago

   Just like going to all the lectures and not doing any homework isn't going to prepare you for finals. Videos introduce and explain ideas, but you need to puzzle through problems yourself to gain a real understanding.
3. 3.▲
   by petawatt 11y ago

   Usually we define "good" for the environment to be the state it would be in without human interference. The Great Oxygenation wiped out most life on Earth, which sounds like a bad thing. But clearing out so many species leaves the