Heat ID’d as Subtle Cause of Rockfalls

Rockfalls without an obvious cause (like an earthquake or expanding ice) may be due to hot daily air temperatures expanding small cracks in cliff faces.   The floor of Yosemite Valley is littered with piles of rocks that crumbled off the park’s iconic cliffs. These rockfalls happen all the time, because Yosemite’s granite walls are … More Heat ID’d as Subtle Cause of Rockfalls

Our noise bothers overlooked seafloor critters

Creatures that live on the seafloor play vital roles in marine ecosystems, but human-made noise can alter their behaviors. Stick your head underwater and you’ll quickly discover that the ocean has a soundtrack. Waves crash, whales sing, and occasionally, an underwater earthquake rumbles from the depths. Over the last century, however, human activities have added … More Our noise bothers overlooked seafloor critters