Stories by Stephanie Pappas

Water usually flows downward, but something strange happened under Greenland’s ice sheet when a deluge punched through the surface to scour an area nearly twice the size of New York’s Central Park

The park’s newest hydrothermal feature has an otherworldly milky texture from dissolved silica

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another question

Influenza viruses like bird flu can mix and match their genomes, and this has played a role in at least three of the last four flu pandemics

As more men turn to testosterone replacement therapy (TRT) for energy, mood and muscle, experts warn the risks are still not fully understood.

Screwworm parasites primarily infect livestock, but human cases have risen in Central America after the pests escaped containment

To boost mood and manliness, men are spending lots of money on the hormone testosterone—yet they may see trouble instead of benefits

The first images of the cosmos taken by the world’s largest digital camera onboard the Vera C. Rubin Observatory are about to be released to the public. Here’s how to watch the action live

The Asian needle ant looks ordinary, but its sting can be worse than a fire ant’s and can be dangerous for anyone who has experienced anaphylaxis

British climbers recently reached the top of Mount Everest in record time. They inhaled xenon gas before the trip. But was that the decisive factor?

Vitamin D supplements may help prevent the loss of telomeres, DNA sequences that shrink with aging, a large study shows. But the health effects aren’t yet clear

NASA’s nearly complete yet canceled lunar rover VIPER isn’t going to get carried to the moon by a private space exploration company—but it’s also not quite dead yet

Hit by restructuring, the EPA is reportedly planning to end the Energy Star program, a project that has saved hundreds of billions of dollars for businesses and consumers

A new study is fueling speculation and fear about the risks of a major earthquake in the Cascadia subduction zone, including massive flooding in California

A forest fire that erupted in New Jersey and spread overnight highlights the major wildfire risk faced by the state and other urban areas

Autism rates are rising, but RFK, Jr., is wrong about the reasons. Here’s what the science says

Cornell is being slammed with stop-work orders that will seriously impact department of defense research linked to the Air Force and military safety, sources tell Scientific American

After a stellar Yankees win on Saturday, torpedo bats are in the spotlight. Is there science behind these baseball bats?

Secretary of Health and Human Services Robert F. Kennedy, Jr., has repeatedly suggested that farmers should let bird flu spread through flocks. Experts explain why that’s a dangerous idea

Trump could drop a federal lawsuit against a petrochemical plant that emits chloroprene. Here’s a look at the cancer-causing chemical

A Chinese start-up has stunned the technology industry—and financial markets—with a cheaper, lower-tech AI assistant that matches the state of the art

Wildfires like the Los Angeles blazes destroy so much, but they often spare some evidence of the cause of their ignition

In California and elsewhere, fast-moving fires are particularly damaging and expensive because they take people by surprise, making evacuations difficult

The oldest human genomes ever sequenced reveal that our Neandertal ancestry came from one “pulse” of interbreeding and pins down the timing