Which species died out first because of humans?
Lacking human oversight, glitches in oil refineries and nuclear plants could lead to fires, nuclear explosions and fallout.
Pandemics, climate change, artificial intelligence: these are just some of the wide-ranging threats to humanity's survival. But they all have one factor in common...
For centuries, we plundered the ocean's depths, hauling up whales by the thousands. But what was the purpose of this dangerous and destructive industry?
This question reveals something much deeper about the ways we understand — and misunderstand — race.
Our brains are ravenous, guzzling up to a quarter of the body's energy. So thinking really hard should be an easy way to burn more calories — right?
Head-bobbing might make pigeons look ridiculous, but there's a practical purpose behind this very strange display.
Several countries are launching claims to vast swathes of the Arctic seabed. But what does that mean for political and environmental stability in the region?
How many people could fit on the moon? Answering that may require asking other questions — about lunar survival.
Beneath the Arctic lie billions of barrels of oil. But as the international energy race intensifies, we wonder, how did all that oil get there in the first place?
We're making great strides in developing alternatives, but here's why it's still necessary to test on animals.
You may give them little thought beyond when to trim them or which nail color to apply. But the humble nail laid the groundwork for our evolution into the humans we are today.