Humans
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We summarize the week's scientific breakthroughs every Thursday.
- Chemistry
Drugged money
U.S. greenbacks are especially effective at pocketing tiny traces of cocaine.
By Janet Raloff - Tech
Isotope crisis threatens medical care
Global production of the feedstock for the leading medical-imaging isotope is low and erratic, putting health care in jeopardy.
By Janet Raloff - Archaeology
Fire engineers of the Stone Age
New evidence indicates that people used fires to heat stones in preparation for making cutting instruments at least 72,000 years ago in southern Africa.
By Bruce Bower - Health & Medicine
Brain doesn’t sort by visual cues alone
Blind and sighted people’s brains sort the living from the nonliving in the same way, suggesting this ability may be hard-wired.
- Earth
Big Gulp, Asian style
Satellite data reveals that increased irrigation pressure is rapidly depleting groundwater in northern India.
By Sid Perkins - Health & Medicine
Bone-preserving drug passes tests in men, women
New drug limits bone fractures in elderly women and men fighting prostate cancer
By Nathan Seppa -
- Agriculture
Pesticide potency can depend on bug’s clock
The daily rhythms in gene activity can affect the toxicity of some poisons.
By Janet Raloff - Anthropology
Humanity’s upright gait may have roots in trees
A comparison of wrist bones from African apes and monkeys indicates that human ancestors began walking by exploiting the evolutionary legacy of ancient, tree-climbing apes.
By Bruce Bower - Health & Medicine
Collins takes helm at NIH
Renowned geneticist will lead the world's largest biomedical research enterprise.
By Janet Raloff - Earth
Spotting danger from on high
Airborne sensors can identify mineral outcrops and soil that may contain natural asbestos.
By Sid Perkins - Math
Baseball by the numbers
A new study evaluates the success of statistical analyses in determining the player with the golden glove.