ScienceDaily: Strange Science News |
- Duck-bill dinosaurs had plant-pulverizing teeth more advanced than horses
- Fox squirrels show long-term investment savvy when hoarding nuts
- The smell of mom: Scientists find elusive trigger of first suckling in mice
- Bacterium in a laser trap: Light tube can grab and scan even tiniest of unicellular organisms
- Unforgeable quantum credit cards in sight
| Duck-bill dinosaurs had plant-pulverizing teeth more advanced than horses Posted: 04 Oct 2012 11:17 AM PDT A team of paleontologists and engineers has found that duck-billed dinosaurs had an amazing capacity to chew tough and abrasive plants with grinding teeth more complex than those of cows, horses, and other well-known modern grazers. Their study is the first to recover material properties from fossilized teeth. |
| Fox squirrels show long-term investment savvy when hoarding nuts Posted: 04 Oct 2012 09:16 AM PDT Researchers are gathering evidence this fall that the feisty fox squirrels scampering around campus are not just mindlessly foraging for food, but engaging in a long-term savings strategy. Humans could learn something about padding their nest eggs from squirrels' diversification efforts. Of course, with squirrels, it's not about money, but about nuts. |
| The smell of mom: Scientists find elusive trigger of first suckling in mice Posted: 04 Oct 2012 09:15 AM PDT Biologists have solved the long-standing scientific mystery of how mice first know to nurse or suckle. This basic mammalian instinct, which could be a key to understanding instinctive behavior more generally, was thought to be triggered by a specific odor (pheromone) that all mouse mothers emit. But the trigger in mice turns out to be a more complicated blend of nature and nurture: a signature mix of odors, unique for each mother, which her offspring learn. |
| Bacterium in a laser trap: Light tube can grab and scan even tiniest of unicellular organisms Posted: 04 Oct 2012 07:40 AM PDT Scientists have constructed an innovative new optical trap that can grab and scan tiny elongated bacteria with the help of a laser. The physicists created a kind of light tube that traps the agile unicellular organisms. Optical tweezers could previously only be used to grab bacteria at one point, not to manipulate their orientation. Researchers have now succeeded in using a quickly moving, focused laser beam to exert an equally distributed force over the entire bacterium, which constantly changes its complex form. At the same time, they were able to record the movements of the trapped bacterium in high-speed three-dimensional images by measuring miniscule deflections of the light particles. |
| Unforgeable quantum credit cards in sight Posted: 04 Oct 2012 06:30 AM PDT Physicists have developed a scheme for noise tolerant and yet safely encrypted quantum tokens. |
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