All Stories by Sid Perkins
- Earth
Northern Refuge: White spruce survived last ice age in Alaska
Genetic analyses of white spruce trees at sites across North America suggest that some stands of that species endured the harsh climate of Alaska throughout the last ice age.
- Earth
Breaking Crust: Sonar finds new kind of deep-sea volcano
Undersea explorations more than 600 kilometers east of Japan have discovered evidence of a previously unknown type of volcanism.
- Paleontology
Rarity of fossils of young tyrannosaurs explained
Paleontologists have unearthed only a few juvenile tyrannosaurs, and a new study suggests why: A large percentage of these meat-eating dinosaurs, unlike many other creatures, survived into adulthood.
- Earth
Intrepid Explorer
A robotic torpedo called an autonomous underwater vehicle has provided scientists with an unprecedented look at the underside of an Antarctic ice shelf.
- Earth
Sandy clues to ancient climate
The orientation of dunes in north-central Nebraska indicates that the climate there a millennium ago was much different than it is today.
- Earth
Global warming heats up nursery of hurricanes
Sea-surface temperatures in the North Atlantic Ocean reached record highs last year.
- Earth
Radiation Redux: Forest fires remobilize fallout from bomb tests
A sensor installed to monitor fallout from modern nuclear tests has detected small amounts of radioactive cesium produced by bomb tests decades ago and sent skyward by forest fires.
- Earth
Underwater landslides tallied near Puerto Rico
An oceanographic survey off the northern coast of Puerto Rico has found remnants of many underwater landslides, a handful of which were large enough to have caused deadly tsunamis.
- Planetary Science
Lots of red dust, but not much noise
In space, no one can hear you scream, but a new analysis suggests that it's pretty quiet on Mars, too.
- Earth
Asian sediments betray age of nearby desert
Grains of silt embedded in thick sediments of northwestern China may settle a debate about the age of the Taklimakan Desert.
- Paleontology
Sticky Subjects: Insights into ancient spider diet, kinship
Remnants of a spider web embedded in ancient amber suggest that some spiders' diets haven't changed much in millions of years.
- Paleontology
Ancient webbed masters
Newly unearthed fossils of a 110-million-year-old bolster the notion that all modern birds evolved from aquatic ancestors.
