Astronomers capture "bizarre" star explosion warped by gravity
The "very rare" star explosion was so warped that it looked like multiple images in the sky.
Nigerian chef breaks world record for longest cooking marathon
Nigerian chef Hilda Baci cooked more than 100 pots of food over the course of 4 days, each big enough to serve 30 to 35 people.
"Ultra rare" pod of endangered sperm whales spotted in California
"This is something that might happen once a year if you are lucky," the marine tour company that saw the sperm whale trio said.
Young bear takes surprise swim with Florida beachgoers
At one point, a witness says the bear was swimming right next to his 12-year-old son.
9-foot long "monster" catfish caught in Italy
The more than 9-foot-long "prehistoric" catfish put up a 40-minute fight with its angler in Italy's Po River.
Boat captain says orcas know "what they are doing" after 2nd ambush
Video of the captain's latest encounters shows orcas "biting off both rudders" of his yacht, with one of the whales seen swimming around with a piece of the rudder in its mouth.
New York City's air quality starts to clear for first time in days
While the orange haze has seemingly moved out of New York City, many people are still at risk of experiencing health issues from the remaining pollution.
See the unique seat that will make airplanes more wheelchair accessible
The new accessible airline seat is proof of "what real leadership looks like," disability activists say.
El Niño is officially here
El Niño's return could bring much more rain to Southern California later this year and drier conditions in the Pacific Northwest.
Pittsburgh Zoo welcomes endangered baby pygmy hippo
The 1-year-old hippo is "trying out everything, every which way" as he makes himself at home at the zoo.
What is the Air Quality Index?
If you're seeing a thick haze outside your window, it's likely air pollution. Here's how to find out what the air quality is near you.
Health impacts of exercising in bad air quality
As cities in the Northeast U.S. reach and even surpass "unhealthy" levels of air pollution, officials are urging people to avoid outside activities. Here's what to know about exercising when air quality is bad.
Volcanic glass fragments and ash fall on Hawaii as volcano erupts
Lava flows have been observed on the surface of the volcano's crater floor, officials said, as the eruption began early in the morning.
How poor air quality impacts your health
Here's what to know about the health effects of wildfire smoke as it continues to infiltrate the U.S.
Wildfire smokes pushes NYC to second-worst air quality worldwide
The air quality in New York City on Wednesday morning is 14.5 times the World Health Organization's annual air quality guideline value.