From Titanoboa, a prehistoric snake as long as a Tyrannosaurus rex, to modern-day pythons and boa constrictors that can swallow humans whole, these are the biggest, heaviest and longest snakes to have ever lived on Earth.
Race and ethnicity are terms that are sometimes used sloppily, almost interchangeably. But race and ethnicity are not the same thing.
Elephants gather round their dead, dogs go into decline and chimpanzees stop eating when their companions die. Is this grief, as humans know it?
Lightning is one of the greatest natural forces on our planet. New mapping tools are revealing just how big it is.
It's often assumed that birds are the only animals that sing. But these other divas of the animal kingdom prove otherwise.
Some animals lead quiet lives, while others prefer constant chatter. Why do some animals vocalize more than others, and what are they saying?
In 1626, native people purportedly sold Manhattan to the Dutch for a pittance. But there are problems with this story that we shouldn't overlook.
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?
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?