Sid Perkins' Articles
- Reviews & Previews
The Pleistocene epoch — lasting from 2.6 million to about 10,000 to 12,000 years ago — was an exciting time: Continent-sized ice sheets advanced and retreated multiple times, and several varieties of humans inhabited Earth. During warm interglacial episodes, hyenas and hippos lived as far north as England; in colder periods, exotic species rendered Europe, in the words of this father-daughter writing team, “a woolly Serengeti on steroids.”
- PeopleResearchers are tapping into the wealth of observations being made by citizen scientists nationwide. One of the largest repositories of such data is maintained by the USA National Phenology Network.
- NewsA decade of droughts has stifled the increasing growth of terrestrial vegetation.
- NewsScientists say the risk of future temblors in region is unclear.
- NewsBetween 2004 and 2009, the rate of clearing dropped almost 75 percent.
- NewsMicrowave bursts may serve as warning shots.
- NewsThe size of chinchilla pellets reveals past desert environment.