Stories by K. R. Callaway

Long-held assumptions tell us that atoms with the same number of protons, neutrons and electrons are indistinguishable, but one physicist wants to put this idea to the test

Sled dogs have worked alongside humans for thousands of years. In the harsh Alaskan winter they remain the best option for traversing the snowy landscape

An oddity among exoplanets, L 98-59 d is (so far) in a class all its own, but astronomers expect powerful new telescopes will eventually reveal more like it

Lindy Elkins-Tanton, principal investigator of NASA’s Psyche mission, explains in her new book how lessons from interplanetary exploration can help people solve problems together

The FDA rejected the promising skin cancer drug RP1 twice, leaving many puzzled and worried about what this means for other drug approvals

Rescuers had called off the effort to save “Timmy,” a humpback whale that had stranded in the Baltic Sea last month. But now a last-ditch attempt to move the creature by barge is underway

Light pollution is dangerous for birds flying over towns and cities. Here’s how you can help

Even before water reaches them, the sound of droplets triggers germination in rice plants

A new study in songbirds might help explain why humans don’t generate many new brain cells, called neurons, as adults

Artemis II’s crew went farther from humanity than anyone has been before. Here’s how one scientist determined whom, specifically, they were farthest from

Decades of data reveal that animals involved in the wildlife trade—from pet sales to meat markets to illegal poaching—are much more likely to carry pathogens that can infect humans

Artemis II’s AVATAR experiment will see organs-on-a-chip travel to the moon and back, revealing how such a journey affects the body’s cells

These incredible corals form what may be one of the world’s largest reef systems—and researchers have a plan to restore it

Knowing how your eye optimizes vision could have big implications for the progression of nearsightedness

On their voyages to the moon, NASA’s astronauts are finally getting some creature comforts of terrestrial toilets—such as having a door and being able to pee and poop simultaneously

A major defense against everything space throws at us, Earth’s magnetic field may even protect the moon from damaging galactic cosmic rays

Antibiotic-resistant bacteria are increasing, and a new study finds that extreme weather may be juicing their rise

New satellite data come up dry as the search for lunar ice continues

Fashion’s 20-year trend cycle isn’t just based on vibes; it can be mathematically modeled

A new data release more than doubles the number of gravitational-wave candidate events—and reveals unexpected complexities of merging black holes

It wasn’t Saint Patrick but a long history of chilly weather and geographic isolation that kept the Emerald Isle snake-free

Viruses develop tricks to attack bacteria without the help of gravity

Using a synchrotron powered CT scanner, the Antscan project created an open-source digital library cataloguing thousands of 3D ant specimens

A Dutch lock is closed for the spring, and its employees want you to tell them when migrating fish come knocking by ringing a digital doorbell