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- Intelligent people are more likely to trust others
- Do elephants call 'human!'? Low rumble alarm call in response to the sound of human voices
- A battery that 'breathes' could power next-gen electric vehicles
- Harnessing everyday motion to power mobile devices
| Intelligent people are more likely to trust others Posted: 16 Mar 2014 10:38 AM PDT Intelligent people are more likely to trust others, while those who score lower on measures of intelligence are less likely to do so, says a new study. Researchers based their finding on an analysis of the General Social Survey, a nationally representative public opinion survey carried out in the United States every one to two years. The authors say one explanation could be that more intelligent individuals are better at judging character and so they tend to form relationships with people who are less likely to betray them. |
| Do elephants call 'human!'? Low rumble alarm call in response to the sound of human voices Posted: 16 Mar 2014 10:37 AM PDT African elephants make a specific alarm call in response to the danger of humans, according to a new study of wild elephants in Kenya. Researchers carried out a series of audio experiments in which recordings of the voices of the Samburu, a local tribe from North Kenya, were played to resting elephants. The elephants quickly reacted, becoming more vigilant and running away from the sound whilst emitting a distinctive low rumble. |
| A battery that 'breathes' could power next-gen electric vehicles Posted: 16 Mar 2014 07:27 AM PDT Sales of electric vehicles (EVs) nearly doubled in 2013, but most won't take you farther than 100 miles on one charge. To boost their range toward a tantalizing 300 miles or more, researchers are reporting progress on a "breathing" battery that has the potential to one day replace the lithium-ion technology of today's EVs. |
| Harnessing everyday motion to power mobile devices Posted: 16 Mar 2014 07:27 AM PDT Imagine powering your cell phone by simply walking around your office or rubbing it with the palm of your hand. Rather than plugging it into the wall, you become the power source. Scientists were recently working on a miniature generator based on an energy phenomenon called the piezoelectric effect, which is electricity resulting from pressure. To their surprise, it produced more power than expected. |
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