ScienceDaily: Strange Science News |
- Monkey business: What howler monkeys can tell us about the role of interbreeding in human evolution
- How common 'cat parasite' gets into human brain and influences human behavior
- New technology decodes chemical messages sent by bed bugs
- Can the memory of a good meal fill your belly?
| Monkey business: What howler monkeys can tell us about the role of interbreeding in human evolution Posted: 07 Dec 2012 07:16 AM PST Did different species of early humans interbreed and produce offspring of mixed ancestry? Recent genetic studies suggest that Neanderthals may have bred with anatomically modern humans tens of thousands of years ago in the Middle East, contributing to the modern human gene pool. But the findings are not universally accepted, and the fossil record has not helped to clarify the role of interbreeding, which is also known as hybridization. Now a study of interbreeding between two species of modern-day howler monkeys in Mexico is shedding light on why it's so difficult to confirm instances of hybridization among primates -- including early humans -- by relying on fossil remains.  |
| How common 'cat parasite' gets into human brain and influences human behavior Posted: 06 Dec 2012 05:32 PM PST Toxoplasma is a common 'cat parasite', and has previously been in the spotlight owing to its observed effect on risk-taking and other human behaviors. To some extent, it has also been associated with mental illness. A study led by researchers in Sweden now demonstrates for the first time how the parasite enters the brain to influence its host.  |
| New technology decodes chemical messages sent by bed bugs Posted: 05 Dec 2012 05:00 PM PST Bed bugs exchange specific chemical signals corresponding to particular behaviors, and researchers have now combined two unusual technologies to sniff out these signals in a matter of seconds.  |
| Can the memory of a good meal fill your belly? Posted: 05 Dec 2012 05:00 PM PST People who think they have eaten more feel less hungry hours after a meal.  |
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