Astrobiologists think extraterrestrial civilisations grow so much that they hit crisis points, missing the chance to set out ...

In Eagle Pass, a brother-sister team tied to a cartel-backed smuggling ring just learned they will likely never again walk free together. Federal agents this week marked a pair of hard-won prison ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

A Stanford scientist says a new planetary model may explain why we have not found aliens yet, arguing that most small rocky ...