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Topic: evolution
Why does T-Rex have tiny arms?
"Tyrannosaurus rex was big, Tyrannosaurus rex was vicious, and Tyrannosaurus rex had tiny arms." In this PBS Eons episode, Hank Green explains how the Tyrannosaurus rex lost its arms over the course of 90 million year...
Seven Million Years of Human Evolution
Scientists use fossils to reconstruct the evolutionary history of hominins—the group that includes modern humans, our immediate ancestors, and other extinct relatives. Today, our closest living relatives are chimpanze...
Dinosaurs probably didn’t roar. What did they sound like?
If birds are living dinosaurs—"the only survivors of the mass extinction that wiped out their giant relatives 65 million years ago"—then did dinosaurs really sound like the roaring mammals that we've heard in the movi...
Why can’t some birds fly?
Though the common ancestor of all modern birds could fly, many different bird species have independently lost their flight. Flight can have incredible benefits, especially for escaping predators, hunting and traveling...
The Pink Iguana of Galapagos
One of Galapagos’ most recently described species is also one of its genetically oldest. Pink iguanas are not just a different colour from other land iguanas; they are a completely separate species. There are only aro...
The Vogelkop Superb Bird-of-Paradise, a new species
The Vogelkop superb bird-of-paradise may look like the Superb Bird-of-Paradise, the hopping black bird with iridescent blue 'eyes' and a 'mouth' in its outspread wings, but the Vogelkop has recently been named as a se...
Nature’s Masters Of Disguise – Maddie About Science
Go behind-the-scenes at the Smithsonian Museum of Natural History with arachnologist Hannah Wood and Maddie About Science host Maddie Sofia to see the mimics of the museum's collection. Atlas moths, stick bugs, leaf i...
Evolution 101 & how natural selection works – NOVA PBS
What is evolution, how has it created Earth's biodiversity, and how can a phylogenetic or evolutionary tree—a tree of life—help us better understand how different species are related? Learn some basics from this Evolu...
How do birds learn to sing?
A brown thrasher knows a thousand songs. A wood thrush can sing two pitches at once. A mockingbird can match the sounds around it — including car alarms. These are just a few of the 4,000 species of songbirds. How do ...
Why Dogs Have Floppy Ears, an animated tale
Why do some breeds of dogs have floppy ears? Charles Darwin asked this question in his 1868 book The Variation of Animals and Plants Under Domestication. And it's not just the ears of dogs. The ears, snout lengths, fu...
Why Is Blue So Rare In Nature?
Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. And the ones that do make blue? They make it in some very strange and special ...
Rebuilding a real T. Rex with scientific research & new tech
Tyrannosaurus rex is probably the most famous extinct animal, but thanks to Hollywood and various out-of-date books, there are a lot of misconceptions out there about this incredible dinosaur. There is too much hype a...
Becoming Visible: Shattering stereotypes & misconceptions in science
The University of Florida's Florida Museum of Natural History celebrated 100 years of inspiring people to care about life on Earth in 2017. To mark the closing of an era and the beginning of a new century, UF News pro...
How the Animal Kingdom Sleeps & How Animals See the World – Animalism
Sleep is universal in the animal kingdom, but each species slumbers in a different — and often mysterious — way. Some animals snooze with half their brain, while others only sleep for two hours a day (without even suf...
How a kingfisher, an owl, & a penguin helped redesign Japan’s Shinkansen
How is Japan’s Shinkansen, a long-nosed bullet train that travels up to 240–320 km/h (150–200 mph), like a kingfisher? Or an owl? Or an Adélie penguin? In this video from Vox and 99% Invisible, we see how these three ...
The Anomalies: The Acorn Woodpecker
As their name implies, acorn woodpeckers rely heavily on acorns for sustenance. To make sure this seasonal resource remains available throughout the year, the birds build enormous “granaries” by drilling thousands of ...
What does the word ‘theory’ mean in science?
There’s an important difference between a scientific theory and the fanciful theories of an imaginative raconteur, and this quirk of semantics can lead to an all-too-common misconception. In general conversation, a ‘t...
The world’s largest collection of whale bones
The world's largest collection of whale bones—sperm whale, gray whale, massive blue whales—and a bunch of ancient whale fossils from extinct species are stored in this warehouse in Maryland. It's a whale bone warehous...
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