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ScienceDaily: Top Science News

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• How some chickens got striped feathers
• Dramatic stellar fireworks of star birth
• You spy with your little eye, dogs can adopt the perspective of humans
• Are your muscles genetically prepared to run a marathon?
• Tibet sediments reveal climate patterns from late Miocene, 6 million years ago
• Where does your blood actually come from?
• The redomestication of wolves
• Discovery of 'mini-brains' could change understanding of pain medication

How some chickens got striped feathers Posted: 07 Apr 2017 01:02 PM PDT Birds show an amazing diversity in plumage color and patterning. But what are the genetic mechanisms creating such patterns? Researchers now report that two independent mutations are required to explain the development of the sex-linked barring pattern in chicken. Both mutations affect the function of CDKN2A, a tumor suppressor gene associated with melanoma in humans.

Dramatic stellar fireworks of star birth Posted: 07 Apr 2017 10:27 AM PDT Stellar explosions are most often associated with supernovae, the spectacular deaths of stars. But new observations provide insights into explosions at the other end of the stellar life cycle, star birth. Astronomers captured these dramatic images as they explored the firework-like debris from the birth of a group of massive stars, demonstrating that star formation can be a violent and explosive process too.

You spy with your little eye, dogs can adopt the perspective of humans Posted: 07 Apr 2017 06:18 AM PDT Humans are able to interpret the behavior of others by attributing mental states to them (and to themselves). By adopting the perspectives of other persons, they can assume their emotions, needs and intentions and react accordingly. In the animal kingdom, the ability to attribute mental states (Theory of Mind) is a highly contentious issue. Cognitive biologists could demonstrate with a new test procedure that dogs are not only able to identify whether a human has an eye on a food source and, therefore, knows where the food has been hidden. They can also apply this knowledge in order to correctly interpret cues by humans and find food they cannot see themselves.

Are your muscles genetically prepared to run a marathon? Posted: 06 Apr 2017 09:15 AM PDT For a few years, running has been fashionable. But there is a great difference between the physical demands of running a few kilometers and doing a marathon. Now researchers have concluded that genetics plays an essential role in success when completing this long distance.

Tibet sediments reveal climate patterns from late Miocene, 6 million years ago Posted: 06 Apr 2017 09:15 AM PDT Researchers surveyed sediment samples from the northern Tibetan Plateau's Qaidam Basin and constructed paleoclimate cycle records from the late Miocene epoch of Earth's history, which lasted from approximately 11 to 5.3 million years ago. Reconstructing past climate records can help scientists determine both natural patterns and the ways in which future glacial events and greenhouse gas emissions may affect global systems.

Where does your blood actually come from? Posted: 06 Apr 2017 07:26 AM PDT Scientists have developed a new understanding of how the first blood cells form during human development as they transition from endothelial cells to form blood cells of different types.

The redomestication of wolves Posted: 05 Apr 2017 10:10 AM PDT Gray wolves provide an important case study for understanding ecosystem effects when apex predators reoccupy their former ranges. These species often rely on anthropogenic food sources, which has broad implications for ecosystem restoration efforts and the possibility of human-wildlife conflict.

Discovery of 'mini-brains' could change understanding of pain medication Posted: 05 Apr 2017 06:11 AM PDT The human body's peripheral nervous system could be capable of interpreting its environment and modulating pain, neuroscientists have established, after successfully studying how rodents reacted to stimulation.

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