Search Results for: Butterflies
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1,041 results
1,041 results for: Butterflies
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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.
- Math
Election Selection
By ignoring how voters might rank all the candidates in an election, the plurality system opens the floodgates to unsettling, paradoxical results when there are three or more candidates.
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How the Butterfly Gets Its Spots
The spots on a butterfly wing turn out to be unusually good model systems for a range of disciplines from genetics to behavioral ecology, offering biologists a chance to paint the really big picture of how evolution works.
- Ecosystems
Cultivating Weeds
Some formerly mild-mannered plants turn into horticultural bullies when planted far outside their native range.
- Plants
Emergency Gardening
High-tech tissue culture is helping some ultrarare plants finally have sprouts of their own.
- Earth
When Genes Escape
The focus of the debate over transgenic crops has changed from whether genes will escape to what difference it will make when they do.
- Health & Medicine
All Roads Lead to RUNX
Genetic mutations that predispose some people to the autoimmune diseases lupus, psoriasis, and rheumatoid arthritis appear to have a common molecular feature: They derail the work of a protein, called RUNX1, that regulates how active certain genes are.
- Tech
Reinventing the Yo-Yo
No longer simple toys, today's pricey yo-yos sport high-tech features—such as ball bearing transaxles and precision string-snagging mechanisms—that permit dazzling new styles and complex tricks.
- Animals
Thoroughly Modern Migrants
Butterflies and moths are causing scientists to devise a broader definition of migration and this has raised some old questions in new ways.
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DNA Bar Codes
Scientists are using a small piece of DNA as a molecular bar code, a unique identifier to separate organisms into species.
- Anthropology
Remnants of the Past
Sophisticated analyses suggest that some prehistoric peoples were highly skilled weavers.
- Tech
Matrix Realized
Devices called brain-computer interfaces could give paralyzed patients the ability to flex mechanical limbs, steer a motorized wheelchair, or operate robots through sheer brainpower.
