Mysterious moving rocks at Death Valley's Racetrack Playa have baffled observers for years. Scientists have now revealed that ...

SAN DIEGO (FOX 5/KUSI) — For decades, the enigmatic “sailing stones” of Racetrack Playa in Death Valley National Park have captivated scientists and visitors alike. There are large rocks, some ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

For more than a century, visitors to a remote California lakebed have stared at long, ruler-straight tracks etched into the mud and wondered how heavy boulders could apparently glide on their own. The ...