Search Results for: Amphibians
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726 results
- Earth
Possible snake shortage looms
Declines among species in Europe and Africa raise herpetologists’ worries of widespread population losses.
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Dawn of the Dinosaurs
Paleontologists probe the majestic reptiles’ origin and rise.
- Earth
Atrazine paper’s challenge: Who’s responsible for accuracy?
As a new critique of a review paper on atrazine suggests, some papers may simply overtax a journal’s fact-vetting enterprise. Which would be bad for science. And bad for society.
- Life
Evolutionary genetic relationships coming into focus
Researchers have filled in about 40 percent of the tree of life for mammals and birds, but other vertebrates lag behind.
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Weed Killer in the Crosshairs
Concerns prompt reexamination of atrazine’s safety.
- Earth
A fresh look at Mount St. Helens
Nearly 30 years after the peak’s major eruption, recovery has just begun.
- Earth
Fowl surprise! Methylmercury improves hatching rate
A pinch of methylmercury is just ducky for mallard reproduction, according to a new federal study. The findings are counterintuitive, since methylmercury is ordinarily a potent neurotoxic pollutant.
- Life
Morse Toad: When amphibians tap their toes
Toe wiggling creates motions, vibrations that get potential prey moving.
- Health & Medicine
Overly Hungry for Frogs
Frogs are shipped half-way round the world to sate human appetites for this lean white meat.
- Agriculture
EPA reviews hints of weed killer’s fetal risks
The Environmental Protection Agency will be convening meetings of its Scientific Advisory Panel on pesticides throughout 2010 to probe concerns about the safety of atrazine, a weed killer on which most American corn growers rely. The first meeting of these outside experts started Tuesday. And although a large number of studies have indicated that atrazine can perturb hormones in animals and human cells — and might even pose a possible risk of cancer amongst heavily exposed people, these outcomes were not the focus of EPA’s review Tuesday. Risks to babies were.
- Ecosystems
Flowering plants welcome other life
When angiosperms diversified 100 million years ago, they opened new niches for ants, plants and frogs.
- Life
Step-by-step Evolution
Hard to find, but very fruitful when found, transitional fossils fill in the gaps in the paleontological record.
