We're sending rovers to Mars to try and figure out our place in
the universe, but what about our place on Earth? Sure, Earth is
a big place, but you might be surprised exactly how
insignificant we all are in contrast with its mammoth mass.  So
what would happen if everyone on the planet got together and
jumped all at the same time? I'll let vsauce explain the
details, but wouldn't change the world, so to speak. If you want
to do that, stick to calling people names on the Internet,
that's how you make a difference, right? [YouTube]