A rock that formed around 4.5 billion years ago on Mars before being blasted into space by a meteor strike and making its way ...

Earthen channels that span more than 640 kilometres show that pre-Mayan Mesoamericans built large-scale fish-trapping ...

When deciding whether to let people await trial at home or in jail, US judges can use a risk score algorithm. But it often makes harsher recommendations than humans do ...

New technologies to remove carbon dioxide from the atmosphere are growing in scale –though their effect on the climate remains negligible ...