How To Travel to the Center of the Earth
We know shockingly little about what's going on beneath our feet. Sure, geologists and seismologists have burrowed down some—but if the Earth is a cocktail party, their work is the equivalent of nervous, pre-martini small talk. There are some pretty serious questions left unanswered. For instance, what's the center of the Earth made of—there's apparently some confusion over whether it's a uranium nuclear furnace or a slowly cooling ball... READ ON
When dragonflies mate, their tails form a heart.