Toward a safer form of acetaminophen

Efforts to develop a safer form of acetaminophen—the pain and fever-reducer that is one of the most widely used drugs—have led to discovery of substances that may have less potentially toxic effects on the liver. A report ...

Physicists discover a new kind of friction in the nanoworld

Whether in vehicle transmissions, hip replacements, or tiny sensors for triggering airbags: The respective components must slide against each other with minimum friction to prevent loss of energy and material wear. Investigating ...

China closes liberal website after reform call

A liberal Chinese journal had its website shut down on Friday, it said, after it urged the country's Communist leaders—who regularly promise reform—to follow the constitution.

Stem cell pioneer sues Nobel assembly in US

A pioneer of stem cell research is suing the assembly that awards the Nobel medicine prize, in a first such lawsuit, over claims it made about this year's winners, a spokeswoman said Thursday.

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