Humans dominate Earth today, building cities, launching spacecraft and transforming the planet in ways no other known species ...

Up to 3 million people once lived here. The jungle hid their monuments for 2,000 years.

When astrobiologist Adam Frank walked into the office of NASA scientist Gavin Schmidt, he had what he believed was the weirdest question: do aliens experience climate change? It took just moments for ...

Discovery of almost 400 structures may help to redefine the true scale of the Aquiry civilization — plus, tiny fossils of the earliest fossil squid ancestor.