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EarthWretched weather sealed explorer’s fate
Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.
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EarthTaking a mountain’s measure
A survey of Mount Everest alters its official elevation to 29,035 feet.
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HumansAn Artist’s Timely Riddles
A team of researchers demonstrates that there may be much more to the art of Marcel Duchamp than meets the casual, or even critical, eye.
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MathSetting Records Randomly
A wide variety of factors can influence the winning time of a race. For a given event over the course of a year, for example, the results may depend on the quality of the runners, the race location, weather conditions, and so on. In a 1985 article in the Journal of the American Statistical Association, […]
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EarthMapping the Frozen Sky: Study looks at clouds from both sides now
By combining simultaneous observations from satellites and ground-based instruments, scientists can generate a three-dimensional map of the size and distribution of ice particles in a cirrus cloud.
By Sid Perkins -
AnimalsMale bats primp daily for odor display
For the first time, scientists have described the daily routine of male sac-winged bats gathering to freshen the odor pouches on their wings.
By Susan Milius -
Health & MedicineStem cells repair rat spinal cord damage
Using embryonic stem cells from mice, researchers restored some movement in paralyzed rats that had undergone a crippling spinal injury.
By Nathan Seppa -
PhysicsTime’s arrow may make U-turns in universe
Time may run backwards for isolated chunks of matter in our universe and that reversed state could be probed gently from the forward-going realm without disturbing the time arrow.
By Peter Weiss -
ChemistryAntibiotics may become harder to resist
Drug designers have developed new tactics to make it harder for bacteria to survive exposure to antibiotics.
By Janet Raloff -
Mom’s eggs execute Dad’s mitochondria
Sperm may tag their own mitochondria for destruction inside the fertilized egg.
By John Travis -
EarthSmoggy Asian air enters United States
High concentrations of ozone from Asia reach the United States.