Posts Tagged ‘natural selection’
Will global warming eclipse evolution?
UC DAVIS (US) — Climate change is leaving animals and plants little wiggle room, pushing them to the edge of their heat tolerance level. Continue…
Wednesday, June 22, 2011 9:05 - 3 Comments
Top Stories - Mar 24, 2011 9:35 - 3 Comments
Sometimes it’s survival of the less fit
MICHIGAN STATE (US) — Using cloned E. coli bacteria, researchers replayed evolution over and over and uncovered an unexpected twist on survival of the fittest: Sometimes it’s better to be more adaptable. (more…)
Science & Technology - Nov 9, 2010 16:52 - 9 Comments
Does Darwin’s theory hold up?
NYU (US) — Charles Darwin’s theory of gradual evolution is not supported by geological history, according to a new paper. (more…)
Science & Technology - Oct 15, 2010 13:50 - 1 Comment
For genes: location, location, location
NYU / PRINCETON (US) — Evolution is less a function of what a physical trait is and more a result of where the genes that affect that trait reside in the genome, a new study suggests. (more…)
Health & Medicine - Oct 5, 2010 15:18 - 1 Comment
City dwellers evolved to fend off TB
UCL (UK) — Over time, populations in areas with long urban histories have developed genetic resistance to diseases like tuberculosis and leprosy. (more…)
Science & Technology - Jul 15, 2010 7:42 - 26 Comments
Evolution on the fly: Look, Ma! No genes!
U. ROCHESTER (US)—Researchers have identified a new mechanism for evolution that bypasses genes altogether. (more…)
Science & Technology - Jun 24, 2010 14:45 - 0 Comments
How pale people evolved to be tan free
PENN STATE (US)—People who remain pale and never tan can blame their distant ancestors for choosing to live in the northern reaches of the globe. Likewise, those who easily achieve a deep, dark tan can thank their ancestors for living in the subtropical latitudes, according to Penn State anthropologists. (more…)
Society & Culture - May 17, 2010 16:23 - 7 Comments
Brawn beats beauty to get the girl
PENN STATE (US)—Male physical competition, not attraction, was central in winning mates among human ancestors, according to a Penn State anthropologist. (more…)
Science & Technology - May 4, 2010 11:18 - 1 Comment
The downside to tons of testosterone
INDIANA U. (US)—Too much—or too little—testosterone may put some males at an evolutionary disadvantage, according to new research involving an American songbird. (more…)
Science & Technology - Feb 22, 2010 12:34 - 0 Comments
New type of genetic variation discovered
VANDERBILT (US)—The unexpected discovery of a new type of genetic variation suggests that natural selection—the force that drives evolution—is both more powerful and more complex than scientists have thought. (more…)
Science & Technology - Oct 30, 2009 14:31 - 8 Comments
Nature selects for shorter, stouter women
YALE (US)—Researchers have detected the effects of natural selection among two generations of contemporary women and predict their descendants will be slightly shorter and chubbier, have lower cholesterol and blood pressure, and have their first children earlier in life. (more…)
Best of 2009 - Oct 22, 2009 14:09 - 12 Comments
BEST OF 2009: Fish switch it up to get the blues
EMORY (US)—Researchers have discovered the first example of an animal deleting a molecule to change its visual spectrum, linking evolution to functional changes and the possible environmental factors driving them. (more…)
Earth & Environment - Aug 13, 2009 12:37 - 0 Comments
Toastier temps make for smaller sheep
Soay sheep graze on the Scottish island of Hirta. Their average size has been declining since 1985, and researchers suspect warmer temperatures are playing a role. (Credit: Tim Coulson)
Science & Technology - Jun 16, 2009 16:54 - 1 Comment
Deadly snails reveal how genes evolve
A live Textile cone, Conus textile, is one of the three most dangerous cone snails to handle.
