8,095 results
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Science News of the Year 2002
A review of important scientific achievements reported in Science News during the year 2002.
- Paleontology
Sea Dragons
About 235 million years ago, as the earliest dinosaurs stomped about on land, some of their reptilian relatives slipped back into the surf, took on an aquatic lifestyle, and became ichthyosaurs—Greek for fish lizards.
- Earth
Zooplankton diet of mercury varies
By modeling a lake ecosystem in large tubs of water, researchers have found that zooplankton—an important link in the food chain—consume much less toxic methylmercury when the lake experiences an algal bloom.
- Ecosystems
Fish stocking may transmit toad disease
Hatchery-raised trout can transfer a deadly fungus to western toads, bolstering the view that fish stocking may play a role in amphibian population declines.
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Migration may reawaken Lyme disease
Lyme disease can hide in healthy-looking birds until the stress of migration drives it into a potentially infectious state.
- Math
A Fibonacci Fountain
The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]
- Math
A Fibonacci Fountain
The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]
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- Health & Medicine
New gene-therapy techniques show potential
Two technologies for transferring genes, one that uses mobile DNA called transposons and another that uses a weak virus, have proved successful in overcoming genetic disorders in mice.
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Evolutionary Upstarts
Theories of the evolution of the human mind are evolving, with some researchers now presenting alternatives to the dominant notion that genetic competition for survival during the Stone Age yielded brains stocked with a bevy of instincts for specific types of thinking.
- Health & Medicine
Cooking Up a Carcinogen
The discovery that acrylamide—a known animal carcinogen—forms in many foods as they fry or bake has prompted the development of an international research network to investigate whether it poses a threat.
