They were ugly. And, unfortunately, they were not equipped with an anus. But the sand dwellers could be an important part of filling in our own early evolutionary tree.
(Image credit: Jian Han, Northwest University, China)
An enterprise-minded ecologist from England is helping endangered brown-headed spider monkeys in Ecuador by connecting their preservation to high-end chocolate.
(Image credit: Ryan Eskalis/NPR )
Scientists are experimenting with species' environmental DNA to find out how far and how fast it travels in streams. The technology is starting to revolutionize how we protect native animals.
(Image credit: Jes Burns/Oregon Public Broadcasting/EarthFix)
Scientists have created an experimental device that putters around inside the stomach, neutralizing acid and then delivering antibiotics. The goal is to help the antibiotics work better.
(Image credit: Angewandte Chemie International Edition)
The Doomsday Clock has inched closer to and farther from nuclear Armageddon since the Manhattan Project in 1947. On Thursday, the clock moved closer to Midnight — the closest it has been since 1954.
Some lesser known parts of the Affordable Care Act have especially benefited people 50 and older. Will repeal of the ACA bring back sky-high premiums and gaps in Medicare's prescription drug coverage?
(Image credit: Bill Gallery/Doctor Stock/Science Faction/Getty Images)
What started as one "unofficial resistance" Twitter account has grown to a list of more than 80 "rogue" accounts advocating for the science community and climate change research.
(Image credit: David Calvert/Getty Images)
Hundreds of thousands of acres have been destroyed and at least 10 people have died, including several firefighters. The Chilean government says the blazes are the worst in the country's history.
(Image credit: MARTIN BERNETTI/AFP/Getty Images)
On Jan. 27, 1967, three astronauts were killed when a fire broke out in their Apollo 1 capsule during a test on the launchpad. The capsule will be put on public view for the first time Friday.
(Image credit: Keystone/Hulton Archive/Getty Images)
Results from two sets of experiments provide encouragement to researchers working on "chimera" embryos that may someday be used to grow organs for transplantation into people.
(Image credit: Cell)
The relationship between the Trump administration and the Environmental Protection Agency is off to a rough start. The new administration has instructed officials to freeze its grants and contracts, external communication has been frozen, and academic papers by agency scientists may be subject to review before publication. NPR's Robert Siegel talks with Tracey Woodruff, a former senior scientist and policy advisor at the EPA under the Clinton and Bush administration, about whether previous transitions in administrations have always had been this rocky.
Santiago Ramón y Cajal's drawings of nerve cells changed scientists' understanding of the brain. Now, 80 of those drawings are going on display at an art museum in Minnesota.
(Image credit: Courtesy Instituto Cajal del Consjo Superior de Investigaciones Científicas, Madrid)
The country's single biggest source of climate information is the federal government. What happens if a Trump administration tries to censor it?
(Image credit: Joe Raedle/Getty Images)
For the first time since January of 2014, no part of California is in the "exceptional drought" category, according to a U.S. Drought Monitor report.
(Image credit: U.S. Drought Monitor)
Girls are less likely to identify their own gender as brilliant than boys are, even at age 5. One question is whether it's the girls who need to change their thinking about innate intelligence.
(Image credit: Marc Romanelli/Getty Images/Blend Images)
The leak from an underground pipeline in north-central Iowa was first discovered in a field on Wednesday morning. Crews for the company, Magellan Midstream Partners, are working to clean it up.
Criticizing President Trump, the Bulletin of the Atomic Scientists sees increased risk in dangers to humanity, from the proliferation of nuclear weapons to climate change.
(Image credit: Bulletin of the Atomic Scientists)
Countering the Trump administration's restrictions on public communications, unofficial Twitter accounts for the National Park Service have been tweeting facts about climate change.
(Image credit: Francis Temman/AFP/Getty Images)
The Trump transition at the Environmental Protection Agency is off to a bumpy start. External communications have been frozen, and this morning NPR reported that even academic papers by agency scientists will be subject to review during the transition.
A red panda named Sunny has escaped from the Virginia Zoo in Norfolk. Turns out, they have a reputation for escaping their enclosures.