Rare "highly toxic" viper found in Ohio
"Swamp rattlers" were once found across 30 Ohio counties, but for decades, they've become "increasingly rare" – and have only been seen in a handful of spots.
Joro spider photos: Get up close and personal as they trek north
Joro spiders can lay up to 500 eggs in a single sac and can parachute themselves "tens to hundreds of miles" away through the sky. These photos show where they've landed so far.
Wary of giant, parachuting Joro spiders? Here's what to know.
They're big, they're scary-looking and they float through the air — but Joro spiders are also among the "shyest" spiders researchers have ever found.
Carbon dioxide levels surging "faster than ever," scientists say
Planet-warming greenhouse gases are "building up, much like trash in a landfill," one researcher said.
World hits 12 consecutive months of record heat — and it's not over
"Our planet is trying to tell us something. But we don't seem to be listening," the U.N.'s secretary-general said after May marked another month of back-to-back global heat records.
Invasive fish that can survive on land for days found in Missouri
The fish are known to be "exceptionally slimy" and can live out of water for days at a time.
Venomous flying spiders with 4-inch legs spread across East Coast
"It is a matter of when, not if" the spiders are set to arrive, experts say, and it could happen any day now.
Downed power line puts Texas boy, grandmother put in ICU
A downed power line near Lake Conroe left a 6-year-old with burns on half of his face and his 56-year-old grandmother with burns on more than half of her body, their family says.
Levi Wright, rodeo star's 3-year-old son, dies after toy tractor accident
Levi Wright was found unconscious in water a mile from home last month after a toy tractor accident.
Mystery surrounds Alice, the goldfish found alive on a U.K. lawn
How did a goldfish end up in a U.K. doctor's garden with no pond around? Here's the story of Alice, aka "Lazarus, aka The Fish Who Lived."
Miss the "parade of planets"? Here's when you could see it again.
You may have heard that six planets were set to align in a rare "parade of planets" this morning. Experts say it wasn't the "spectacular celestial event" you were promised – and shared when you should really watch.
Vermont law requires "Big Oil" to pay for climate change damages
the law would require fossil fuel companies to contribute to a superfund that will be used to help the state adapt to climate change and develop more resilient infrastructure.
Dramatic video shows Texas couple saving driver from flooded ditch
A Houston-area couple who took a wrong turn during storms on Tuesday stumbled across a truck driver nearly completely submerged in a flooded drainage ditch – and used a hammer to save his life.
Watch Live: "Explosive" volcano eruption underway in Iceland
"Considerable lava fountaining" is spewing from a two-mile-long fissure as southwest Iceland battles its fifth volcanic eruption since December.
Ohio billionaire to attempt taking sub to Titanic wreckage
Ohio billionaire Larry Connor said he wants to prove that the imploded Titan sub "was a contraption" and that the ocean can be "kind of life-changing if you go about it the right way."