Sid Perkins is a freelance science writer based in Crossville, Tenn.
Sid Perkins' Articles
- NewsConstruction of the Three Gorges Dam across the Yangtze River in China may lead to warmer temperatures in Japan, because any diversion of water for Chinese agriculture could initiate convection in the Japan Sea that brings warmer water to the surface.
- NewsA distinctive organic chemical related to substances produced by modern flowering plants has been found in ancient fossil-bearing sediments, possibly helping to identify the ancestral plants that gave rise to flowers.
- NewsA supposed missing link between dinosaurs and birds that was first unveiled in 1999, and revealed to be a forgery soon thereafter, was actually cobbled together from parts of animals from two new species.
- NewsAnalysis of the excavation in Herculaneum of the victims of the A.D. 79 eruption of Italy's Mount Vesuvius indicates that when the initial ash flow swept through the city, it arrived so quickly that some residents didn't even have time to flinch.
- NewsNew observations of the middle and upper atmosphere over Earth's polar regions may require scientists to revamp their mathematical models of temperature and other environmental conditions at high altitudes.
- NewsScientists have found microorganisms within Kentucky shale that are eating the ancient carbon locked within the rock, a previously unrecognized dietary habit that could have a prevalent role in the weathering and erosion of similar sedimentary rock at many other locations.
- NewsScuffs, scrapes, and gouges found atop undersea plateaus and ridges in the Arctic Ocean suggest that kilometer-thick ice shelves covered much of the ocean there during some previous ice ages.
- NewsEvidence from 65-million-year-old sediments suggests that a single impact from space wiped out the dinosaurs and that ecosystems recovered from the trauma in only a few thousand years.
- NewsThe Asian mountain range that includes some of the tallest peaks in the world turns out to be about 15 million years younger than geologists previously thought.
- NewsComparisons of data obtained from instruments that orbited Earth more than 25 years apart provide direct evidence that the planet's greenhouse effect increased significantly between 1970 and 1997.