Sid Perkins is a freelance science writer based in Crossville, Tenn.
Sid Perkins' Articles
- NewsAerial photographs taken over the past 50 years show that Alaska's coastlines of permafrost aren't that permanent after all.
- NewsLarge increases in Asian industrial emissions of nitrogen oxides in the next 30 years could lead to a tripling of the acid rain there due to those pollutants.
- NewsSediments in lakes and bogs along the eastern coast of the United States show that midlatitude bodies of water have sequestered higher amounts of carbon than others since the last ice age.
- NewsNew computer models developed to analyze how seismic vibrations travel through uneven terrain can also be used to identify and track heavy vehicles such as tanks and trains.
- NewsA magnitude 8.5 earthquake off the coast of Oregon would devastate portions of the state, kill thousands of residents, and wrack the economy there for more than a decade.
- NewsA new map of the magnetic anomalies in Antarctica and the seafloor surrounding the continent is giving researchers a fresh tool to use in analyzing geologic features that lie hidden beneath thousands of feet of ice or storm-tossed seas.
- FeatureThe forensic analysis of trace fossils such as footprints, nests, burrows, and even coprolites—fossilized feces—reveal subtle clues about ancient species, their behavior, and their environment.
- NewsA tiny fossil skull found in 195-million-year-old Chinese sediments provides evidence that crucial features of mammal anatomy evolved more than 45 million years earlier than previously thought.
- NewsChunks of fossil charcoal found in ancient sediments in north central Pennsylvania suggest that cycles of wildfire plagued Earth more than 360 million years ago.
- NewsWhen Hurricanes Dennis, Floyd, and Irene pummelled North Carolina in the fall of 1999, they delivered a three-punch sequence that may, for years to come, disrupt fishing in the Atlantic Ocean.