Pointed tool made from elephant bones seen from both sides

Ancient humans turned elephant remains into a surprising array of bone tools

Aug. 30, 2021

Humans living about 400,000 years ago produced an unprecedented diversity of elephant bone tools, including pointed tools for carving meat and wedge-shaped tools for cracking open large femurs and other long bones.

Graphic of photons as particles and waves

New quantum 'stopwatch' can improve imaging technologies

Aug. 24, 2021

Engineers have developed the most efficient device to date for counting single photons, or the tiny packets of energy that make up light.

A panorama of the Grand Canyon

Geologists dig into Grand Canyon’s mysterious gap in time

Aug. 23, 2021

Hundreds of millions of years' worth of rocks have gone missing from the Grand Canyon's geologic record. Geologists are trying to discover why.

Artist's depiction of three new species of fossil condylarths: From left to right, Conacodon hettingeri, Miniconus jeanninae and Beornus honeyi. (Credit: Banana Art Studio)

Paleontologists discover 3 new species of primitive ungulates

Aug. 17, 2021

The new species, mouse- to cat-sized ancestors of today's hoofed animals like cattle and deer, offer scientists a new window into what the American West looked like just after the extinction of the dinosaurs.

Goldfish swimming in an aquarium

Engineers uncover the secrets of fish fins

Aug. 11, 2021

Want to swim with the fishes? New research unravels what makes fish fins so strong yet flexible at the same time.

A person receiving a COVID-19 vaccination at SEEC

7 common questions about the delta variant: What the research says

Aug. 5, 2021

Experts answer your questions about the delta variant of the coronavirus—from whether vaccines lose their efficacy over time to how common breakthrough cases are among the vaccinated.

Two fossils lay out on a table

Icy waters of 'Snowball Earth' may have spurred early organisms to grow bigger

July 28, 2021

A new study tackles one of the oldest questions in the history of the planet: How did living organisms get so big?

A mobile COVID-19 vaccination bus parks at the Williams Village residence complex at CU Boulder

As delta variant threatens Colorado, vaccines can stop its spread

July 26, 2021

A new variant of the virus that causes COVID-19 is now behind nearly 90% of the cases in the state. Researchers from CU Boulder talk about this new player in the pandemic and whether vaccinated people should continue to wear masks in public.

Electriflow butterfly flaps its wings

Origami comes to life with new shape-changing materials

July 20, 2021

Researchers have created butterflies that flap their wings, flower petals that wiggle with the touch of a button and self-folding origami drawing on new advances in soft robotics.

Rioters scale a wall at the Capitol on January 6, 2021. (Credit: CC image via Flickr)

Angry politicians make angry voters, new study finds

July 16, 2021

Political anger in the U.S. has reached a fever pitch in recent years. Now, new research shows that ordinary voters may begin to mirror the angry emotions of the politicians they read about in the news.