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ScienceDaily: Top Science News |
| Ice Age wolf DNA reveals dogs trace ancestry to two separate wolf populations Posted: 29 Jun 2022 09:11 AM PDT An international group of geneticists and archaeologists have found that the ancestry of dogs can be traced to at least two populations of ancient wolves. The work moves us a step closer to uncovering the mystery of where dogs underwent domestication, one of the biggest unanswered questions about human prehistory. |
| Is there a right-handed version of our left-handed universe? Posted: 28 Jun 2022 02:01 PM PDT To solve a long-standing puzzle about how long a neutron can 'live' outside an atomic nucleus, physicists entertained a wild but testable theory positing the existence of a right-handed version of our left-handed universe. They designed a mind-bending experiment to try to detect a particle that has been speculated but not spotted. If found, the theorized 'mirror neutron' -- a dark-matter twin to the neutron -- could explain a discrepancy between answers from two types of neutron lifetime experiments and provide the first observation of dark matter. |
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