The largest (left) and the smallest (right) skulls of Homo naledi found in the Rising Star cave system in South Africa. All specimens of H. naledi have been shown to be female. All known skeletons of the ancient human relative Homo naledi discovered in a South African cave system appear to be female, according to…

The cooling effect that volcanoes can have on the environment is often underestimated. Volcanic eruptions produce high-temperature lava and can severely damage the surrounding area, but they may also introduce a large amount of sulfur dioxide gas into the atmosphere due to a massive volume of volatiles and tephra propelled into the atmosphere from the…

Elon Musk has laid out another far-reaching vision for SpaceX, saying the company could return humans to the Moon within the next few years and eventually move thousands of people beyond Earth. Speaking during an interview with Texas Governor Greg Abbott, Musk described plans that would go far beyond short astronaut missions, including permanent settlements…