A spectacular 150-million-year-old trail of more than 130 footprints captures a giant sauropod making a complete loop before continuing on its way. Its uneven stride hints that the long-necked dinosaur may have been walk
Related stories
An 'influencer' degree? Colleges bet on content creator major as critics question its value
EU cities plan to compensate for a fifth of their emissions through carbon removal, but few have thought through how
Monsoon-driven wildfires may have shaped human evolution
Why do people ask so few questions in conversation?
Hidden moth population found after 70 years
From toxic blooms to dead zones, how wildfires transform oceans and lakes