Dozens protest the removal from school of a Chinese activist's daughter.
Shanghai shops are running out of face masks and an anti-viral herbal remedy made from woad.
Growing concerns over cyberespionage have added to U.S. China-tensions.
Air pollution in major Chinese cities is linked to 1.2 million premature deaths.
The virus sparks concerns over Beijing's response following a cover up of the SARS epidemic 10 years ago.
Chinese activists are warned not to gather for memorial events or to visit the graves of dissidents.
Authorities detain rights activists who try to contribute.
Chinese activists are placed under criminal detention after a protest on a busy Beijing street.
'Anti-Party, anti-China or anti-Han Chinese' will be targeted, an anonymous blogger quotes insider sources as saying.
No single source of infection has yet been found and some fear the authorities aren't revealing everything.
Villagers hail poll after three-quarters of households are evicted, losing access to schooling and healthcare.