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Photos: Endangered species
3:51 PM PDT, July 6, 2010
Oceans' growing carbon dioxide levels may threaten coral reef fish
The ocean's rising carbon dioxide levels may cause many coral reef fish to swim toward the smell of predators rather than away from them — and thus toward likely death, marine ecologists said Tuesday.
July 6, 2010
Standing strong against coyotes
Three yipping Pomeranian dogs at her feet, Renee Merrill grabs a 7-iron and steps into her backyard, ready for battle.
July 3, 2010
Ancient sperm whale's giant head uncovered
Paleontologists digging near the coast of Peru have uncovered the largest fossilized skull of a sperm whale ever found.
June 29, 2010
Gulf farmers asked to flood fields for migrating birds
A federal conservation agency said Monday that it would begin paying some gulf region farmers and ranchers to flood their fields so that migratory birds can find alternative rest and nesting grounds to oil-fouled habitats.
June 26, 2010
Whales said to have high levels of toxic metals
Sperm whales feeding in even the most remote reaches of Earth's oceans have built up shockingly high levels of toxic and heavy metals, according to American scientists who say the findings spell danger not only for marine life but for the millions of humans who depend on seafood.
June 27, 2010
SCIENCE FILE
A woman and her elephants
Cynthia Moss was a young reporter for Newsweek magazine when she took an extended trip to East Africa in 1967 and became enamored of the country. While visiting Lake Manyara National Park in Tanzania, she met British zoologist Iain Douglas-Hamilton, who later founded Save the Elephants, and became his research assistant. In 1972, she founded the Amboseli Elephant Research Project at Amboseli National Park in Kenya and has been working there ever since, studying a herd of about 1,500 elephants. She spoke with The Times on a recent visit to Los Angeles.
June 24, 2010
Limbs from fins? One gene may be responsible
A change in just one gene may have jump-started the transition of ancient fish into animals that could move on land — by deleting a fin and replacing it with the rudiments of a limb, scientists reported Thursday in the journal Nature.
June 22, 2010
Chimpanzees will kill to conquer territory, study finds
Chimpanzees are willing to attack and kill chimps from neighboring groups in an effort to expand their territory, according to scientists who have studied a primate colony in Uganda for 10 years.
June 20, 2010
Worry grows over white-nose syndrome's widening reach among bats
A disease killing more than a million with a mortality rate close to 100% continues to sweep across the country. First detected in New York in 2006, it is now found in 14 states in the East and South, leaving starvation and death in its wake, and is working its way westward.
June 19, 2010
How butterfly wings build their color
Butterfly wings are so synonymous with bold color that few people may wonder what makes them that way. But Yale University researchers studying the green color on the wings of five butterfly species say they have found the source of that striking color — three-dimensional crystals known as gyroids.
June 18, 2010
Fishermen face scales of justice
A fish tale that got a lot of play online earlier this year headed into the courtroom Thursday when two men were charged with catching a rare giant black sea bass off the Balboa Pier in Newport Beach.
June 7, 2010
Federal judge blocks Alaska wolf-kill plan
A federal judge in Alaska refused on Monday to allow state officials to launch an aerial wolf hunt on a federal wildlife refuge in the Aleutian Islands, an emergency effort to save a herd of caribou that is on the verge of collapse.
8:18 PM PDT, June 12, 2010
Sea turtles' breeding tradition threatened
Each summer, a ritual millions of years old unfolds on this beach, next to the high-rise condos and beach chairs, the T-shirt shops and the Hooters across the road. A 300-pound loggerhead turtle drags herself out of the water for the first time since her birth, probably on the same beach, 18 years ago.
4:35 PM PDT, June 11, 2010
How sharks sniff out their prey
When tracking down the tantalizing smell of prey, a shark relies mostly on which nostril first detects the scent rather than on the strength of the odor, a study has found.
June 11, 2010
Some prehistoric reptiles may have been warm-blooded
Some of those enormous marine reptiles prowling the Earth's prehistoric seas may have had a surprising edge in their search for prey, researchers say. They may have been warm-blooded.
8:53 PM PDT, May 21, 2010
Experiment aims to return wild bison to open range
-- Back in the days when 30 million bison stormed and thrashed across the Great Plains, the four dozen bison quietly chomping grass on Horse Butte near here wouldn't have raised much attention.
April 27, 2010
Chimpanzees mourn their dead like humans do, research finds
Some chimpanzees seem to grieve similarly to humans in the face of a fellow chimp's death, two new studies have found, appearing to comfort the dying, experience trauma after death and have trouble letting go.
6:37 PM PDT, April 19, 2010
The taming of pigs: DNA sheds light on farming
Today's pigs in China have a pedigree dating back at least 8,000 years to some of the first domesticated swine, scientists say. The finding provides a more detailed picture about the history of animal husbandry and shows that pigs may have been tamed in places archaeologists had never before guessed.
April 17, 2010
Teaching an Australian marsupial to choose life
Ever since its arrival in Australia, the poisonous cane toad has been killing native predators such as the northern quoll, a cat-sized marsupial.
April 8, 2010
SCIENCE
Japanese found to host seaweed-digesting bacteria
Bacteria in the guts of some Japanese people may have acquired the ability to digest seaweed because of the sushi their human hosts consume, researchers have reported. The evolved trait enables their human hosts to digest carbohydrates found in edible seaweed such as nori, whose tough cell walls the human body cannot process on its own.
April 3, 2010
Duck DNA might shield farm chickens from flu
Influenza has for years ravaged domesticated chickens. Now scientists suggest that a small piece of duck DNA might protect the farm birds against the virus -- saving commercial flocks and lessening the possibility that humans could be exposed to dangerous strains of the disease.
7:55 PM PDT, March 25, 2010
Tyrannosaur bone found in Australia
Tyrannosaurs may have stalked far more of the globe than previously thought.
March 23, 2010
Amphibious caterpillars discovered in Hawaii
Moths of the Hawaiian genus Hyposmocoma are an oddball crowd: One of the species' caterpillars attacks and eats tree snails. Now researchers have described at least a dozen different species that live underwater for several weeks at a time.
March 20, 2010
Monarch butterflies suffer population loss
Monarch butterflies, devastated by storms at their winter home in Mexico, have dwindled to their lowest population levels in decades as they begin to return to the United States and Canada.
March 7, 2010
Leviathans may battle in remote depths
In what could be the ultimate marine smack-down, great white sharks off the California coast may be migrating 1,600 miles west to do battle with creatures that rival their star power: giant squids.
12:55 PM PST, March 4, 2010
Scientists settle on single-asteroid hit as culprit in dinosaurs' demise
It's official: The extinction of the dinosaurs and a host of other species 65.5 million years ago was caused by a massive asteroid that crashed into the Gulf of Mexico, creating worldwide havoc, an international team of researchers said Thursday.
November 20, 2009
Scientists zero in on reason for mammoths' demise
About 15,000 years ago, North America was home to an astonishing number of large plant-eating mammals -- giant sloths, mastodons, mammoths. A thousand years later, they were all gone, wiped from the face of the Earth with sudden finality.
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