When Flowing Grains Get Jam Packed

Using color-shifting cylinders as substitutes for sand grains or coal lumps, a Duke University-led team of physicists has pinpointed a critical density level where granular materials suddenly cease flowing like a liquid and ...

How does one sex grow larger than the other?

Why are males larger than females in some animal species (such as most mammals), females larger than males in others (such as most insects), and why are the sexes alike in yet other species (such as several birds)? Further, ...

Space shuttle launch rescheduled

NASA says the launch of Space Shuttle Atlantis to the International Space Station on mission STS-117 will occur March 15 -- one day earlier than planned.

Nestle blamed in Mich. water level battle

Environmental groups and residents in Michigan's Newaygo County are up in arms against Nestle Waters North America over lower water levels in the area.

Genes behind animal growth discovered

How many genes influence a complex trait, like weight, height or body type? And why does the answer matter? Among other reasons, because the "Green Revolution" that multiplied crop yields has to be followed by a "Blue Revolution" ...

Anthropologist confirms 'Hobbit' indeed a separate species

After the skeletal remains of an 18,000-year-old, Hobbit-sized human were discovered on the Indonesian island of Flores in 2003, some scientists thought that the specimen must have been a pygmy or a microcephalic — a human ...

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