The U.S. plans to reduce greenhouse gas emissions dramatically in the next decade. Scientists say it's crucial that the U.S. succeed. Still, many of the positive effects won't arrive for decades.

Soon after U.S. regulators paused the use of the J&J single-dose vaccine, health authorities in many European countries and in South Africa announced that they were also putting it on hold.

In a move to curb climate change, an open letter from companies including Apple and Walmart calls on the Biden administration to cut U.S. emissions to at least half of 2005 levels by 2030.

Dashcam footage and home surveillance video captured the fireball that lit up the night sky on Monday.

One of the hottest areas of research right now: studies to determine how well current vaccines work against emerging coronavirus "variants of concern."

It's hard to track the rate of COVID-19 infections among Arab Americans, who are often counted as white on survey forms without a separate checkbox for Middle Eastern or North African origins.

The dinosaur named Llukalkan aliocranianus was a predator with a menacing appearance and the ability to strike fear in its prey. Paleontologists said it roamed the Earth nearly 80 million years ago.

NOAA is updating its definition of what a "normal" Atlantic hurricane season looks like, based on the last 30 years. The average number of hurricanes in the new normal has risen from 6 to 7.

An ear made from an apple, a spinal cord rebuilt using asparagus...it sounds like bizarre science fiction. But Andrew Pelling is working on a way to revive human tissue with a trip to the supermarket.

A group of paleontologists in Patagonia, Argentina, discovered a new dinosaur species resembling a T-rex that "causes fear."

Researchers are reporting some progress in their search for drugs that tamp down the overwhelming immune reaction that can kill a patient with COVID-19.

In May, NOAA will release its once-a-decade update for the 30-year weather averages that local meteorologists use. In many places, it will mean far fewer days that are "above normal."

The three vaccines available in the U.S. are safe and effective, but not ideal. Now, work is underway to create more convenient and potent vaccines, including a tablet and nasal spray.

Greenlanders are going to the polls Tuesday in a crucial election that could determine if the island taps its vast deposits of rare-earth minerals to fuel eventual independence from Denmark.

A medical team in New York City says it has performed the first complete surgical transplant of a trachea. These kinds of transplants are one of the last big transplant challenges.