ScienceDaily: Top Science News

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• Hulk smash? Maybe not anymore: Scientists block excess aggression in mice
• Most quasars live on snacks, not large meals
• Mars weather report: Size of particles in Martian clouds of carbon dioxide snow calculated
• Antibacterials in personal-care products linked to allergy risk in children
• On the origin of music by means of natural selection

Hulk smash? Maybe not anymore: Scientists block excess aggression in mice Posted: 19 Jun 2012 08:01 PM PDT Pathological rage can be blocked in mice, researchers have found, suggesting potential new treatments for severe aggression, a widespread trait characterized by sudden violence, explosive outbursts and hostile overreactions to stress.

Most quasars live on snacks, not large meals Posted: 19 Jun 2012 07:56 PM PDT A census of 30 quasar host galaxies, conducted with the Hubble Space Telescope and Spitzer Space Telescope, has found that black holes in the early universe may have only needed a few snacks, such as a batch of gas or the occasional small satellite galaxy, rather than one giant meal to fuel their quasars and help them grow.

Mars weather report: Size of particles in Martian clouds of carbon dioxide snow calculated Posted: 19 Jun 2012 09:01 AM PDT New research shows that, much like Earth, the polar caps of Mars change with the seasons. In the dead of a Martian winter, clouds of snow blanket the Red Planet's poles -- but unlike our water-based snow, the particles on Mars are frozen crystals of carbon dioxide. Most of the Martian atmosphere is composed of carbon dioxide, and in the winter, the poles get so cold -- cold enough to freeze alcohol -- that the gas condenses, forming tiny particles of snow.

Antibacterials in personal-care products linked to allergy risk in children Posted: 19 Jun 2012 06:29 AM PDT Exposure to common antibacterial chemicals and preservatives found in soap, toothpaste, mouthwash and other personal-care products may make children more prone to a wide range of food and environmental allergies, according to new research.

On the origin of music by means of natural selection Posted: 18 Jun 2012 12:37 PM PDT Do away with the DJ and scrap the composer. A computer program powered by Darwinian natural selection and the musical tastes of 7,000 website users may be on the way to creating a perfect pop tune, according to new research.

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