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ScienceDaily: Fossils & Ruins News |
| Before horses, ass hybrids were bred for warfare Posted: 14 Jan 2022 12:33 PM PST Before the introduction of the domestic horse in Mesopotamia, valuable equids were being harnessed to ceremonial or military four wheeled wagons and used as royal gifts, but their true nature remained unknown. According to a palaeogenetic study, these prestigious animals were the result of a cross between a domestic donkey and a wild ass from Syria, now extinct. This makes them the oldest example of an animal hybrid produced by humans. |
| Strong evidence shows Sixth Mass Extinction of global biodiversity in progress Posted: 13 Jan 2022 04:49 PM PST The history of life on Earth has been marked five times by events of mass biodiversity extinction caused by extreme natural phenomena. Today, many experts warn that a Sixth Mass Extinction crisis is underway, this time entirely caused by human activities. A comprehensive assessment of evidence of this ongoing extinction event was recently published. |
| Risky food-finding strategy could be the key to human success Posted: 13 Jan 2022 04:41 PM PST When it comes to feeding behavior, humans are the inefficient gas-guzzlers of the primate family, according to a new study of hunter-gatherer energy budgets. Unlike our herbivorous cousins who spend much of the day lounging while chewing their fibrous diets, early humans made high-risk, high-energy investments in finding big calories they could share with the group. And that in turn, likely led to free time and culture. |
| Human immune system uses ancient family of cell death proteins also found in bacteria Posted: 13 Jan 2022 12:13 PM PST The human immune system, that marvel of complexity, subtlety, and sophistication, includes a billion-year-old family of proteins used by bacteria to defend themselves against viruses, scientists have discovered. |
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