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Today's news headlines from the sources selected by our team:

Birds Key to Serengeti Ecosystem

Seed-eating birds in the Serengeti are necessary in order to maintain the forest, scientists said this week.

Livescience.com, Fri, 03 Jul 2009 19:56:38 GMT

The Incredible Shrinking Sheep

Like a wool coat in the rain, sheep are shrinking. But it's not rain that's doing it.

Livescience.com, Fri, 03 Jul 2009 19:56:38 GMT

Hornets suffocate in bee ball

Spike in carbon dioxide combined with heat may make honeybees' enemies vulnerable

Science News / News Items , Fri, 03 Jul 2009 19:56:38 GMT

Climate change shrinks sheep

The size-reducing effects of gentler winters overwhelm evolutionary trends

Science News / News Items , Fri, 03 Jul 2009 19:56:38 GMT

WHO warns swine flu 'unstoppable'

The UN's top health official tells a swine flu forum in Mexico that the spread of the virus worldwide is now unstoppable.

BBC News | Health | World Edition, Fri, 03 Jul 2009 19:57:48 GMT

Solo life ups gene dementia risk

People who have a gene flaw and live alone in middle-age are at highest risk of developing dementia, a study suggests.

BBC News | Health | World Edition, Fri, 03 Jul 2009 19:57:48 GMT

Moon probe returns first images

The US space agency's Lunar Reconnaissance Orbiter spacecraft sends back its first images since reaching the Moon.

BBC News | Science & Environment | World Edition, Fri, 03 Jul 2009 19:56:38 GMT

No safe haven for rarest antelope

Hopes are dashed that some of the few remaining hirola antelope have managed to colonise new, safer territory.

BBC News | Science & Environment | World Edition, Fri, 03 Jul 2009 19:56:38 GMT

Lantus Insulin: Link to Cancer Shaky

Experts say patients should not worry about shaky data suggesting a possible slight cancer risk in people with type 2 diabetes who take Lantus, a long-acting insulin.

WebMD Health, Fri, 03 Jul 2009 19:57:48 GMT

How Safe and Effective Are Sunscreens?

Sunscreens are improving but are still inadequate, says the Environmental Working Group (EWG).

WebMD Health, Fri, 03 Jul 2009 19:57:48 GMT

Stopping PPI Drugs Causes Acid Reflux Symptoms

Healthy people who take acid-blocking proton pump inhibitors for just a few months experienced reflux-related symptoms when they stopped taking them.

WebMD Health, Fri, 03 Jul 2009 19:57:48 GMT

Mars More Like Earth Than Thought? New Details About History Of Water On Red Planet

New details have emerged about the history of water on Mars, gleaned from the 2008 NASA Phoenix Mars Mission. Scientists found patterns in the ground near the lander, multi-sided shapes about three to ten meters in size. The shapes are created when the surface contracts and the ice cracks. Sand fills in the cracks before the ice expands and buckles the surface to make the distinctive patterns.

ScienceDaily: Latest Science News, Fri, 03 Jul 2009 19:56:39 GMT

Triggering Muscle Development: A Therapeutic Cure For Muscle Wastage?

Scientists have shown that if elderly men who were given growth hormone and exercised their legs showed an appreciable muscle mass increase. Researchers say, "This raises the question: Can age-related loss of muscle strength and increased fragility be ameliorated by the therapeutic application of mechano growth factor?"

ScienceDaily: Latest Science News, Fri, 03 Jul 2009 19:56:39 GMT

People only sometimes seek out opposing views, research finds

People tend to avoid ideas they disagree with -- but some factors can prompt them to seek out such points of view, scientists say.

World Science, Fri, 03 Jul 2009 20:12:14 GMT

Finding may help explain giant black holes

Astronomers are reporting that they have discovered a new class of black hole, the mid-sized one.

World Science, Fri, 03 Jul 2009 20:12:14 GMT