A petition raises concerns that the city's traditional architecture is disappearing.
Water sources are affected as Beijing steps up mining activities to fuel growth.
His sentence had been extended for engaging in political activism while jailed.
News of his release had been concealed for months.
Two monks self-immolate in a challenge to Beijing's rule.
The university had canceled an earlier scheduled talk, fearing offense to China, according to reports.
An annual State Department human rights report also says Burma's authoritarian structure 'remains largely intact.'
The Sydney University's action stems from pressure from China, some groups say.
Others are still missing following a crackdown last year by Chinese security forces.
Experts fear interruptions to water flow and call for greater transparency.
Local Tibetans turn out in large numbers to honor the dead protester.
Two others are released in poor health after serving five-year jail terms.
The activist had demonstrated for Tibetan freedom ahead of the 2008 Beijing Olympics.
Chinese authorities proceed with forced demolitions in spite of protests.
A rights group says he has been released due to his poor health.
They commemorate the anniversary of a riot in Lhasa.
Local Tibetans protest the destruction of their homes in a quake-hit area.
See the latest news and developments about the internet, censorship and tools to fully access online information in our language regions. Go to RFA Unplugged
