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ScienceDaily: Strange Science News |
| Scientist identifies signaling underlying regeneration Posted: 02 Jun 2021 12:34 PM PDT The mystery of why salamanders can regenerate a lost limb, but adult mammals cannot has fascinated observers for thousands of years. Now, a team of scientists has come a step closer to unraveling that mystery with the discovery of differences in molecular signaling that promote regeneration in the axolotl, a highly regenerative salamander, while blocking it in the adult mouse. |
| The powerhouse future is flexoelectric Posted: 02 Jun 2021 12:33 PM PDT Researchers have demonstrated 'giant flexoelectricity' in soft elastomers that could improve robot movement range and make self-powered pacemakers a real possibility. |
| A new dimension in the quest to understand dark matter Posted: 02 Jun 2021 12:33 PM PDT As its name suggests, dark matter -- material which makes up about 85% of the mass in the universe -- emits no light, eluding easy detection. Its properties, too, remain fairly obscure. Now, a theoretical particle physicist have shown how theories positing the existence a new type of force could help explain dark matter's properties. |
| Changing the shape of soft matter using logic circuits made from DNA Posted: 02 Jun 2021 10:04 AM PDT The myriad processes occurring in biological cells may seem unbelievably complex at first glance. And yet, in principle, they are merely a logical succession of events, and could even be used to form digital circuits. Researchers have now developed a molecular switching circuit made of DNA, which can be used to mechanically alter gels, depending on the pH. DNA-based switching circuits could have applications in soft robotics, say the researchers. |
| Posted: 02 Jun 2021 10:03 AM PDT Humans can observe what and where something happens around them with their hearing, as long as sound frequencies lie between 20 Hz and 20 000 Hz. Researchers have now developed a new audio technique that enables people to also hear ultrasonic sources that generate sound at frequencies above 20,000 Hz with simultaneous perception of their direction. |
| Young T. rexes had a powerful bite, capable of exerting one-sixth the force of an adult Posted: 02 Jun 2021 06:14 AM PDT Scientists have experimentally measured the bite force of adult T. rexes but not of younger tyrannosaurs. Fossils with juvenile bite marks have now allowed experts to experimentally test how hard juveniles could chomp. Though their bite force is one-sixth that of an adult, it is still stronger than that of living hyenas. The measurement is higher than previous estimates, suggesting a different ecological niche for these youngsters. |
| Synthetic SPECIES developed for use as a confinable gene drive Posted: 02 Jun 2021 06:14 AM PDT Scientists have developed a gene drive with a built-in genetic barrier that is designed to keep the drive under control. The researchers engineered synthetic fly species that, upon release in sufficient numbers, act as gene drives that can spread locally and be reversed if desired. |
| Researchers learn how swimming ducks balance water pressure in their feathers while diving Posted: 02 Jun 2021 06:13 AM PDT A team has discovered the method ducks use to suspend water in their feathers while diving, allowing them to shake it out when surfacing. The discovery opens the door for applications in marine technology. |
| How an elephant's trunk manipulates air to eat and drink Posted: 01 Jun 2021 04:41 PM PDT New research finds that elephants dilate their nostrils in order to create more space in their trunks, allowing them to store up to nine liters of water. They can also suck up three liters per second -- a speed 50 times faster than a human sneeze. The findings could inspire different ways to building robots that manipulate air to move or hold things. |
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