homehome Home chatchat Notifications


Thousands of dinosaur tracks found in Alaska

Paleontologists have scratched the surface of what appears to be a very promising dinosaur site near the Arctic circle, in Alaska. When these dinosaurs roamed the Earth, they stepped in mud; their footprints quickly filled with sand, and were preserved in the form we see them today, like blubs with toes. In July, the scientists […]

Mihai Andrei
September 26, 2013 @ 3:41 am

share Share

Paleontologists have scratched the surface of what appears to be a very promising dinosaur site near the Arctic circle, in Alaska.

dinosaur footprint

When these dinosaurs roamed the Earth, they stepped in mud; their footprints quickly filled with sand, and were preserved in the form we see them today, like blubs with toes. In July, the scientists from the University of Alaska Museum of the North embarked on a 500-mile (800 kilometers) journey down the Tanana and Yukon rivers, bringing back almost a ton of dinosaur footprint fossils!

“We found dinosaur footprints by the scores on literally every outcrop we stopped at,” expedition researcher Paul McCarthy, of the University of Alaska Fairbanks, said in a statement. “I’ve seen dinosaur footprints in Alaska now in rocks from southwest Alaska, the North Slope and Denali National Park in the Interior, but there aren’t many places where footprints occur in such abundance.”

A find of this magnitude today is extremely rare, and paleontologists have their work cut out for them, trying to understand this ecosystem of which they know almost nothing about.

yukon-dinosaur-tracks-2

“This is the kind of discovery you would have expected in the Lower 48 a hundred years ago,” Druckenmiller said in a statement. “We found a great diversity of dinosaur types, evidence of an extinct ecosystem we never knew existed.”

share Share

For better or worse, machine learning is shaping biology research

Machine learning tools can increase the pace of biology research and open the door to new research questions, but the benefits don’t come without risks.

Sixty Years Ago, We Nearly Wiped Out Bed Bugs. Then, They Started Changing

Driven to the brink of extinction, bed bugs adapted—and now pesticides are almost useless against them.

These "Ants" Use Ultrablack to Warn Predators — and Stay Cool

Velvet ants, actually flightless wasps, boast an ultrablack exoskeleton thanks to dense nanostructures.

Scientists Call for a Global Pause on Creating “Mirror Life” Before It’s Too Late: “The threat we’re talking about is unprecedented”

Creating synthetic lifeforms is almost here, and the consequences could be devastating.

This Hornet Can Drink 80% Alcohol Without Ever Getting Drunk and Scientists Finally Know Why

Oriental hornets never get intoxicated with alcohol no matter how strong the alcohol or how long they drink.

This Tiny Microbe Can Withstand Extreme Radiation That Would Obliterate Humans. Here's How It Might Protect Astronauts on a Trip to Mars

Could a humble bacterium hold the key to surviving cosmic radiation?

The heart may have its own "mini-brain": a nervous system that controls heartbeat

Somewhere within the heart, there may be a "little brain".

Crocodile Scales Form in a Surprising Way That Has Nothing to Do with Genetics

The surprising way crocodile scales form offers a glimpse into how evolution works beyond genes.

Trained Dogs Can Sniff Out Canine Bladder Cancer with Impressive Accuracy

Dogs have been successfully trained to detect one of the most common dog cancers with 92% specificity.

GeoPicture of the week: Biggest crystals in the world

Known as Cueva de los Cristales (Cave of Crystals), this hidden chamber in Mexico holds some of the largest natural crystals ever discovered. The translucent pillars, some as long as telephone poles and as wide as tree trunks, make for an eerie underground landscape, seemingly crafted by giants. But there’s no magic involved, just some […]