I wanted to test the doors, says passenger who pried open doors of moving train

Scientists Create World's First 'Synthetic Embyros' Using Stem Cells From Mice

13,000 Years Ago, a Firestorm Covered 10% of Earth's Surface, Triggering an Ice AgeEarth's Ancient 'Supermountains' May Have Been Crucial For Life as We Know It

DNA Shed by Deep-Sea Organisms Reveals a Dark Abyss Teeming With Tiny Life FormsFish Have 'Talked' For 155 Million Years, And Now You Can Hear Their 'Voices'Mysterious Syndrome Turning Sea Stars Into Goo Reveals Another Strange Twist

Rare Breed of Ancient Trees With Incredible Lifespans Help Keep Their Forests AliveThere's a Bunch of Bacteria Having 'Sex' in Your Gut, And It's Wilder Than We Thought

World-Record 'Megaflash' of Lightning Stretched Across The US For Almost 500 Miles

Planet Earth Contains Over 9,000 Tree Species Yet to Be Discovered, Scientists SayThe World's Oldest Chameleon Was Just Uncovered in a 99-Million-Year-Old Amber Fossil

Explorers Might Have Just Stumbled Upon an Adorable New Octopus SpeciesAt 440 Million Years Old, This Fungus Is The Earliest Land-Based Life Ever Found

10 Weird Things You Never Knew About The Ocean's Deepest PlacesThe World's Pollinators Are Dying Out, And All Our Favourite Foods Could Go With Them