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- Gecko grippers get a microgravity test flight
- Cells 'feel' their surroundings using finger-like structures
- Hunter-gatherer past shows our fragile bones result from inactivity since invention of farming
- Variety is the spice of humble moth's sex life
| Gecko grippers get a microgravity test flight Posted: 22 Dec 2014 05:54 PM PST There are no garbage trucks equipped to leave the atmosphere and pick up debris floating around Earth. But what if we could send a robot to do the job? Scientists at NASA's Jet Propulsion Laboratory in Pasadena, California, are working on adhesive gripping tools that could grapple objects such as orbital debris or defunct satellites that would otherwise be hard to handle. |
| Cells 'feel' their surroundings using finger-like structures Posted: 22 Dec 2014 01:54 PM PST Cells have finger-like projections that they use to feel their surroundings. They can detect the chemical environment and they can 'feel' their physical surroundings using ultrasensitive sensors. New research shows how the finger-like structures, called filopodia, can extend themselves, contract and bend in dynamic movements. |
| Hunter-gatherer past shows our fragile bones result from inactivity since invention of farming Posted: 22 Dec 2014 01:50 PM PST Latest analysis of prehistoric bones show there is no anatomical reason why a person born today could not develop the skeletal strength of a prehistoric forager or a modern orangutan. Findings support the idea that activity throughout life is the key to building bone strength and preventing osteoporosis risk in later years, say researchers. |
| Variety is the spice of humble moth's sex life Posted: 22 Dec 2014 05:43 AM PST A small brown moth, the gold swift moth (Phymatopus hecta), has one of the most complex sex lives in the insect world, new research has found. Despite the insect's unassuming appearance, a new study reports a variety and complexity in its mating patterns and sexual positions worthy of an insect Karma Sutra. |
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