In the past, Australia was home to massive kangaroos. These giants weighed up to 250kg. That's way more than today's biggest kangaroos, which max out at 90kg. Scientists have been wondering if these big guys could hop like their smaller cousins. Hopping is a big deal for kangaroos. It helps them mo
A long time ago, around 252 million years, Earth faced its worst life crisis. The "Great Dying" wiped out nearly 90% of all species. After this disaster, the planet stayed extremely hot for 5 million years. Scientists have been trying to figure out why. Recently, a group of researchers made a big d
The story of teeth begins in a surprising place: the bumps on ancient armored fish. These fish, swimming in Earth's oceans around 465 million years ago, had sensory tissues that might have evolved into the dentine found in human teeth. Dentine is the inner layer of teeth that senses pressure, pain,
In Australia, long ago, there were giant kangaroos. These were not like the kangaroos seen today. They were much bigger. Some weighed up to 170 kilograms. That is more than twice the weight of the biggest red kangaroo alive now. Scientists thought these giants would have roamed far and wide. But the
The ancient terror crocodile, Deinosuchus, was a fearsome predator that roamed North America around 82 to 75 million years ago. This giant reptile had a body nearly as long as a bus and teeth the size of bananas. It was known for its wide, long skull with a unique, bulbous lump, unlike any other cro
Imagine trying to figure out what dinosaurs ate by looking at their fossilized vomit and poop. That's exactly what scientists did! They studied hundreds of these "bromalites" from Poland, which are over 200 million years old. By using advanced tools like particle accelerators, they found bits of fis
Did you know that over half of Earth's surface remains unexplored? That's right, we've only mapped a quarter of the seafloor to a high resolution. So what lurks in the depths? This week, oceanographers discovered a whopping seamount off the coast of Chile, a mountain rising 3,109 meters from the oc
