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The Khoisan people of Botswana share mitochondrial DNA with the last matrilineal common ancestor of all humans alive today.

Every person alive today descended from a woman who lived in modern-day Botswana about 200,000 years ago, a new study finds

Modern humans emerged in Africa around 200,000 years ago. Now a research team has figured out where on the continent our ancestors originated.
A full-grown Tyrannosaurus rex weighed between 6 and 9 tons and was up to 43 feet long.

The T. Rex had the strongest bite of any land animal ever — and new research shows the dinosaur really could crush a car

Scientists have discovered that T. rexes had rigid skulls, which enabled the dinosaurs to have the strongest bite force of any land animal on Earth.
Ancient Australia was home to strange marsupial giants, some weighing over 2,200 pounds.

For millions of years, eastern Australia was home to 2,200-pound marsupials with giant claws

A group of now-extinct marsupials named palorchestids once roamed eastern Australia. These giants weighed up to 2,200 pounds and had large claws.
An artistic reconstruction of the extinct short-faced kangaroo.

More than 40,000 years ago, giant kangaroos roamed Australia. Their jaws were surprisingly similar to those of pandas, a new study found.

Extinct Australian kangaroos weighed more than 250 pounds and had powerful jaws to crunch through tough vegetation, much like today's giant pandas.
Right upper teeth of the Homo luzonensis individual CCH6. From left to right: two premolars and 3 molars.

Scientists may have discovered a new human species. It lived on a tiny island in the Philippines at the same time as Homo sapiens.

Anthropologists may have discovered a new human relative named Homo luzonensis on the island of Luzon in the Philippines.
It took the Earth 10 million years to recover from the mass extinction that killed the dinosaurs.

So many animals are going extinct that it could take Earth 10 million years to recover

Earth took 10 million years to recover from the mass extinction that killed the dinosaurs. Our planet may be experiencing another mass extinction now.

Nibbled-on bones found in a cave revealed that our Neanderthal ancestors ate each other. Scientists may have figured out why.

A rapid global warming 120,000 years ago left our Neanderthal ancestors facing starvation. So they turned to cannibalism.
An artistic reconstruction of two individuals of Peregocetus, one standing on the rocky shore of modern-day Peru and the other preying on fish. The existence of a tail fluke remains hypothetical.

Paleontologists have discovered an ancient whale that had four legs and could walk on land

Paleontologists discovered an ancient whale off the coast of Peru that had four legs and could walk on land.
A fossil specimen of Daihua sanqiong, which some scientists think is an ancestor of the comb jelly.

This ancient sea creature had 18 tentacles that funneled food into its gaping mouth — and it may be the ancestor of an even creepier ocean anima...

Scientists have discovered a 518-million-year-old fossilized sea creature that had 18 tentacles. It could be the ancestor of comb jellies.
We usually think of T. rex as a monstrous predator, but their babies were almost defenseless.

Baby T. rexes were covered in peach fuzz and the size of small turkeys — here’s what they looked like

A new museum exhibit reveals an updated depiction of T. rexes. Their babies were the size of turkeys and sported a coat of fuzzy feathers.