These lines in the mud are now pushing scientists to rethink the origin story of the Americas. In 2021, a first analysis of these footprints found that they were between 21,000 and 23,000 years old.

The southwestern corner of Missouri might not be where most people imagine finding a portal to another world. But there it sits, tucked away in the town of Noel (pronounced “Nole,” not like Christmas) ...

They're in the headlines every week—critical minerals like lithium, cobalt, nickel, graphite and the rare earth elements ...