News
- Earth
A tropical permafrost layer in Peru may be one of the world’s largest
Vast permafrost beneath the upper slopes of Peru’s tallest volcano could become a regional water source as glaciers in the Andes retreat.
- Earth
A 2011 earthquake bounced a seismic wave off Earth’s core, nudging Japan east
The wave's round trip to Earth's core set off a fault slip along Japan's plate boundaries, revealing a seismic hazard scientists hadn't recognized.
- Paleontology
A textbook assumption about early land vertebrates may be wrong
Three species that lived about 308 million years ago challenge the idea that the first land vertebrates underwent amphibian-like metamorphosis.
