'Dinosaur highway' unearthed in England, dating back 166 million years

A worker's discovery of nearly 200 dinosaur tracks in a limestone quarry in Oxfordshire, England, has unveiled a 166-million-year-old "dinosaur highway."

Grieving orca who carried dead calf in 2018 now seen with newborn

An orca that captured the world’s attention in 2018 after she carried her dead newborn calf for weeks appears to be a new mother again, bringing a sign of hope to researchers.

Monarch butterfly: Should they be given federal protections?

Depending on where they live in the U.S., some monarch butterfly populations could face extinction by 2080 if they aren’t extended federal protections, one expert said.

World's oldest known wild bird lays egg at 74 years old

The U.S. Fish and Wildlife Service's Pacific region says the 74-year-old Laysan albatross returned to the Midway Atoll National Wildlife Refuge in late November to lay an egg.

New monster tarantula species is 'hairy giant among dwarves'

Biologists have discovered a new tarantula species in Cuba that is bigger and hairier than other spiders in its genus.

New Zealanders work together to save stranded whales

“This response demonstrates the deep connection we all share with our marine environment," Joel Lauterbach, a Department of Conservation spokesperson, said in a statement.

Lost penguin’s 2,000-mile journey to Australia ends with return to Southern Ocean

The emperor penguin, dubbed Gus, had somehow swam over 2,000 miles from his icy home and was found on a sun-drenched beach in Denmark, Western Australia, earlier this month.

Snake found slithering inside Hawaii Christmas tree shipment

Shop workers unloading a supply of Christmas trees in Hawaii found an unexpected visitor hiding within the shipment.

Watch: Great white shark swims close to Australian surfers

A group of surfers had a close encounter with a great white shark off the coast of Emerald Beach, New South Wales, on November 13.

Photos: See lone emperor penguin 1st to swim from Antarctica to Australia

A lone emperor penguin was found malnourished on a popular beach after making the shocking 2,200 mile swim from Antarctica to Australia.

Escaped monkeys update: More than half safely recovered, several still on the loose

Officials in South Carolina have recaptured over half of the 43 Rhesus macaques that escaped from the Alpha Genesis research facility in Yemassee last week.