Discovery December 22 Limping dinosaur's twisted path puzzles paleontologists, 150 million years later: 'Very rare' Scientists analyzed the world's only remaining looping dinosaur trackway in Colorado, revealing a 150 million-year-old sauropod that may have been limping.
Discovery December 22 Self-healing concrete? Buried Pompeii site reveals secret behind Rome's enduring structures Archaeologists at a Pompeii site buried by the 79 AD eruption of Mount Vesuvius have uncovered evidence of ancient Roman concrete technology that could heal itself over time.
UFOs December 22 Pilot reports UFO hovering beside jet, leaving air traffic control stunned: 'Good luck with the aliens' New video reportedly reveals pilot's eerie encounter with mysterious silver cylinder hovering near aircraft wing over Rhode Island, leaving pilot baffled.
Sharks December 22 Swimmer vanishes after possible shark encounter off California coast during group outing New details emerged as swimmer went missing off California coast in possible shark attack. Witness saw shark breach with human body at Lovers Point Beach.
Discovery December 22 Archaeologists reveal nutritious food remains discovered in ancient villa quarters Some ancient Roman slaves ate better than free citizens, archaeologists in Pompeii have discovered, after they found preserved fruits and beans in slave quarters.
Washington DC December 21 Mock funeral held for the penny at Lincoln Memorial as 230-year coin production ends Mock funeral held at Lincoln Memorial marks end of penny production after President Trump's announcement to halt minting due to rising production costs.
Discovery December 21 Scientists shatter timeline of human fire-making with 400,000-year-old discovery in England The earliest evidence of deliberate fire-making by humans was discovered at 400,000-year-old site in Barnham, England, pushing back the timeline by 350,000 years from previous findings.
Hawaii December 21 Fisherman survives near-fatal shark attack with own lifesaving care, instincts that kept him alive Hawaii fisherman survives brutal shark attack after trying to help tangled predator, performs lifesaving first aid on himself in dramatic ocean rescue.
Wild Nature December 20 Large Burmese python on video getting pulled from Florida neighborhood tree: 'It was pretty dangerous’ Professional snake removal experts captured a 30-pound, 6½-foot Burmese python from a Miami-Dade residential area, preventing potential danger to pets and children.
Minnesota Vikings December 20 Vikings' team plane forced to turn around with mechanical issue during travel to Giants game The Minnesota Vikings' travel was disrupted when a team plane experienced mechanical issues, forcing a return to Minneapolis during Saturday's flight to face the Giants.
World December 20 Several elephants killed in train crash after impact causes multiple coaches to derail A high-speed passenger train struck an elephant herd in northeastern India, killing seven wild animals while all 650 passengers escape unharmed.