Shark Bite Leads to Reproduction Mystery
June 25, 2007 12:00 AM - Sonja Barisic, Associated Press
A recent study had documented the first confirmed case of asexual reproduction, or parthenogenesis, among sharks: a pup born at a Nebraska zoo came from an egg that developed in a female shark without sperm from a male.
Fear of Predators Is Not Natural, Study Finds
June 22, 2007 12:00 AM - Ed Stoddard, Reuters
Fear of predators is not instinctive but is a learned behavior that only develops when prey species share space with animals that eat them, according to a new study released this week.
Drifting Icebergs Are Hotspots of Life
June 22, 2007 12:00 AM - Randolph E. Schmid, Associated Press
Icebergs that break off Antarctica and drift away turn out to be hotspots of life in the cold southern ocean, researchers report. Climate warming has led to an increase in the number of icebergs breaking away from the Antarctic in recent years, and a team of researchers set out to study the impact the giant ice chunks were having on the environment.
Glacial Lake Vanishes in Southern Chile
June 21, 2007 12:00 AM - Associated Press
A five-acre glacial lake in Chile's southern Andes has disappeared -- and scientists want to know why. One theory is the water disappeared through cracks in the lake bottom into underground fissures.
Foreign-Born Students Coming To America To Study the Tropics
June 18, 2007 12:00 AM - Betsy Taylor, Associated Press
Scholars from more than 20 nations conduct research at the Whitney R. Harris World Ecology Center, which has an international reputation for its ecology and conservation research and educational programs. Based at the University of Missouri-St. Louis, the center draws on resources at the botanical garden and the St. Louis Zoo, both among the top institutions of their kind.
Dropping Ice Age Scenario, Researchers Discard Gulf Stream Catastrophe Scenario
June 18, 2007 12:00 AM - Karl Ritter, Associated Press
From the deck of a research ship moored in these gusty north Atlantic islands, workers are offloading three bright orange buoys whose sonar devices will help Bogi Hansen fill more gaps in an intriguing twist on climate change forecasts.
Scientists Examine Cause of Bee Die-Off
June 15, 2007 12:00 AM - Genaro C. Armas, Associated Press
Scientists investigating a mysterious ailment that killed many of the nation's honeybees are concentrating on pesticides and a new pathogen as possible culprits, and some beekeepers are already trying to keep their colonies away from pesticide-exposed fields.
Populations of 20 Common Birds Declining
June 15, 2007 12:00 AM - Seth Borenstein, Associated Press
The populations of 20 common American birds -- from the fence-sitting meadowlark to the whippoorwill with its haunting call -- are half what they were 40 years ago, according to an analysis released Thursday.
Weapon Fragment from 1800s Found in Whale
June 13, 2007 12:00 AM - Reuters
A fragment of a weapon used by commercial whalers in the 1800s was found in a massive bowhead whale caught off Alaska last month, suggesting it may be more than a century old, officials said Tuesday.
U.N. Seeks to Conserve Genetic Resources
June 12, 2007 12:00 AM - Nicole Winfield, Associated Press
The United Nations is stepping up its campaign to conserve the world's genetic resources so crops and animals can adapt to global warming and other challenges, focusing on fish for the first time since fish are increasingly being bred to meet the world's food needs.