The Planet
Scientists spot the brightest flare yet from a supermassive black hole Nature walks are good for you, but can a city stroll be just as good? Young T. rex or a new dinosaur? New bones add to the debate The International Space Station marks 25 years of nonstop human presence in orbit Anxiety over global warming is leading some young Americans to say they don't want children
China's rare golden monkeys debut at European zoos
People use garden tools to protect millions of migrating red crabs on Christmas Island
The world is heading to add 57 superhot days a year
SpaceX launches the 11th test flight of its mega Starship rocket
Arctic seals and more than half of bird species are in trouble on latest list of threatened species
Once-secret Emperor Commodus' passage to Rome Colosseum opens to public for the first time
ROME (AP) – For the first time in nearly 2,000 years, visitors to Rome’s world-renowned Colosseum will have the opportunity to walk through a hidden imperial passage that once allowed Roman emperors to reach the ancient amphitheater unseen.