Stephanie Pappas

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

Specific phobias are out-of-proportion fears to objects, animals or situations, and fortunately, they can be treated.

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

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

The End-Permian mass extinction killed an estimated 80% of life on Earth, but new research suggests that plants might have done okay.

Mount Spurr near Anchorage has been showing signs of unrest for a year. Now scientists think it's creeping closer to an eruption.

Oxytocin, a hormone linked to bonding behaviors, might also help mice modulate their pregnancies. Someday, this line of research could improve our understanding of human fertility.

Health secretary RFK, Jr. has repeatedly suggested that farmers should let bird flu spread through flocks. Experts explain why that’s a dangerous idea

A study of a woman who died in 2024 as the oldest person on Earth attempts to untangle the factors that enable some people to ward off disease in old age.

Scientists uncovered a key genetic pathway in the origin of feathers, but they found that evolution is stubborn in turning back the clock.