ScienceDaily: Top Science News |
- Chimpanzees successfully play the Ultimatum Game: Apes' sense of fairness confirmed
- Gene flow from India to Australia about 4,000 years ago
- Tissue engineers report knee cartilage repair success with new biomaterial
- Global warming has increased monthly heat records worldwide by a factor of five, study finds
- New implant replaces impaired middle ear
| Chimpanzees successfully play the Ultimatum Game: Apes' sense of fairness confirmed Posted: 14 Jan 2013 12:34 PM PST Researchers have shown that chimpanzees possess a sense of fairness that has previously been attributed as uniquely human. Biologists played the Ultimatum Game with the chimpanzees to determine how sensitive the animals are to the reward distribution between two individuals if both need to agree on the outcome.  |
| Gene flow from India to Australia about 4,000 years ago Posted: 14 Jan 2013 12:29 PM PST Australia is thought to have remained largely isolated between its initial colonization around 40,000 years ago and the arrival of Europeans in the late 1800s. A new study has found evidence of substantial gene flow between Indian populations and Australia about 4,000 years ago.  |
| Tissue engineers report knee cartilage repair success with new biomaterial Posted: 14 Jan 2013 12:29 PM PST In a small study, researchers reported increased healthy tissue growth after surgical repair of damaged cartilage if they put a "hydrogel" scaffolding into the wound to support and nourish the healing process. The squishy hydrogel material was implanted in 15 patients during standard microfracture surgery, in which tiny holes are punched in a bone near the injured cartilage. The holes stimulate patients' own specialized stem cells to emerge from bone marrow and grow new cartilage atop the bone.  |
| Global warming has increased monthly heat records worldwide by a factor of five, study finds Posted: 14 Jan 2013 07:17 AM PST Monthly temperature extremes have become much more frequent, as measurements from around the world indicate. On average, there are now five times as many record-breaking hot months worldwide than could be expected without long-term global warming, shows a new study. In parts of Europe, Africa and southern Asia the number of monthly records has increased even by a factor of ten. 80 percent of observed monthly records would not have occurred without human influence on climate, the authors conclude.  |
| New implant replaces impaired middle ear Posted: 14 Jan 2013 06:25 AM PST Functionally deaf patients can gain normal hearing with a new implant that replaces the middle ear. The unique invention has been approved for a clinical study.  |
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