News tagged with stones

On the edge of friction

(PhysOrg.com) -- The problem exists on both a large and a small scale, and it even bothered the ancient Egyptians. However, although physicists have long had a good understanding of friction in things like stone blocks being ...

dateDec 20, 2011 in Condensed Matter
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Tainted milk shows China's food safety challenges

(AP) -- The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are ...

dateFeb 04, 2010 in Health
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