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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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ScienceShot: These Bears Count
15 June 2012 12:52 pm
If there's anything more impressive than a bear's size, it's its intelligence. Bears can learn to ride bicycles, use tools, and as new research shows, "count." Scientists trained three American black bears (Ursus Americanus) to discriminate between groups of dots on a touchscreen computer: Two bears learned to pick the group with fewer dots, while the third learned to choose the group with more dots. In some trials, the group with fewer dots took up more space; in others, the dots moved. All three bears could use the number of dots to guide their choices, but the bear trained to pick groups with more dots performed better on its tests and could also discriminate with moving dots, researchers report online this month in the journal Animal Behaviour. Overall, the bears' performance matched those of monkeys in previous studies, suggesting that animals can evolve impressive cognitive abilities without living in large social groups.
See more ScienceShots.