Sid Perkins is a freelance science writer based in Crossville, Tenn.
Sid Perkins' Articles
- NewsExcavations at North America's largest Kitter Litter mine have yielded fossils of ancient aquatic reptiles, as well as evidence of a tsunami generated by the extraterrestrial impact that killed off the dinosaurs about 65 million years ago.
- NewsChanges in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather in the mountains downwind, imperiling ecosystems there.
- NewsPaleontologists have unearthed the remains of what they believe could be the largest flying creature yet discovered—a 12-meter-wingspan pterosaur.
- NewsIsotopic analysis of architectural timbers from ancient dwellings in the U.S. Southwest has shown from which distant forests the massive logs came.
- FeatureAnalyses suggest that dust has profound, complex, and far-reaching effects on the planet's climate.
- NewsScientists have used the principles of quantum physics to answer the long-standing puzzle of why seismic waves travel at different speeds in different directions across Earth's inner core.
- NewsScientists say that a narrow region that rims the southern edge of the Tibetan Plateau could be the spawning grounds for large earthquakes that could threaten millions in southern Asia in the decades to come.
- NewsA new group of hydrothermal vents found in the Indian Ocean are populated by communities of organisms that differ significantly from other such groups of vent systems.
- NewsOcean-floor sediments drilled from Antarctic regions recently covered by ice shelves suggest that those shelves were much younger than scientists had previously thought.
- NewsVestiges of soft tissue preserved in a 70-million-year-old Mongolian fossil suggest that some dinosaurs could have strained small bits of food from the water and mud of streams and ponds, just like some modern aquatic birds do.