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A new wrinkle in ancient ocean chemistry
Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE),...
Earth Sciences |
Read moreWhen ants attack: Researchers recreate chemicals that trigger aggression in Argentine ants
The new study, to be published Wednesday, Oct. 28, in the open-access journal BMC Biology, sheds light on the factors influencing the social behavior of the Argentine ant, Linepithema humile, and prov...
Life Sciences | Read moreScientists Discover Gene that 'Cancer-Proofs' Rodent's Cells
Despite a 30-year lifespan that gives ample time for cells to grow cancerous, a small rodent species called a naked mole rat has never been found with tumors of any kind—and now biologists at the Univ...
Life Sciences | Read moreBlood ties -- younger generation more willing to donate blood
'Like other countries, Canada's population is aging, and the implications of this demographic change need to be better understood from the perspective of blood supply' says Antonio Páez...
Studies and Analyses | Read moreTherapeutic Nanoparticles Give New Meaning to Sugar-Coating Medicine
In cooperation with colleagues at The Johns Hopkins University, Dartmouth College, the University of Manitoba and two biopharmaceutical companies, the NIST team has demonstrated* that the particles—es...
Life Sciences | Read moreSolar Cycle Driven by More than Sunspots; Sun Also Bombards Earth with High-Speed Streams of Wind
The study, led by scientists at the National Center for Atmospheric Research (NCAR) and the University of Michigan, finds that Earth was bombarded last year with high levels of solar energy at a time ...
Earth Sciences | Read moreQuiet Sun bombards Earth with winds
"The Sun continues to surprise us," says lead author Sarah Gibson of the National Center for Atmospheric Research (NCAR) in Boulder, Colo. "The solar wind can hit Earth like a fire hose...
Earth Sciences | Read moreScience and Media Disconnect? Maybe Not, Says a New Study
However, a new study by University of Wisconsin-Madison researchers, published in the current issue (summer 2009) of Journalism & Mass Communication Quarterly, suggests otherwise.The study, co...
Studies and Analyses | Read moreExercise Minimizes Weight Regain by Burning Fat Before Carbs
The University of Colorado Denver study also found that exercise prevents the increase in the number of fat cells that occurs during weight regain, challenging the conventional wisdom that the number ...
Health and Medicine | Read moreDiscovery of novel genes could unlock mystery of what makes us uniquely human
The prevailing wisdom in the field of molecular evolution was that new genes could only evolve from duplicated or rearranged versions of preexisting genes. It seemed highly unlikely that evolutionary ...
Life Sciences | Read moreSurprising results in teen study: adolescent risky behavior may signal mature brain
The brain goes through a course of maturation during adolescence and does not reach its adult form until the mid-twenties. A long-standing theory of adolescent behavior has assumed that this delayed b...
Studies and Analyses | Read moreMolecules wrestle for supremacy in creation of superstructures
The research team studied 'chiral' or 'different-handed' molecules which are distinguishable by their inability to be superimposed onto their mirror image. Such molecules a...
Life Sciences | Read moreAnts More Rational than Humans
This is not the case of humans being “stupider” than ants. Humans and animals simply often make irrational choices when faced with very challenging decisions, note the study’s architects Stephen Pratt...
Studies and Analyses | Read moreRethinking Brownian motion with the 'Emperor's New Clothes'
In similar fashion, researchers at the University of Illinois have now revealed the naked truth about a classic bell-shaped curve used to describe the motion of a liquid as it diffuses through another...
Materials Sciences | Read moreEarliest animals lived in a lake environment
Evidence for life on Earth stretches back billions of years, with simple single-celled organisms like bacteria dominating the record. When multi-celled animal life appeared on the planet after 3 billi...
Earth Sciences | Read more
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