But Dr. Johnson contends that the discount rate needs to be lower because climate change has the potential to severely disrupt projected economic growth.
Outside the Amazon, recent strikes, some of them violent, have also disrupted projects under construction by the oil giant Petrobras, including the Comperj petrochemical complex in Rio de Janeiro, the Barra do Riacho port in Espírito Santo State and the Abreu e Lima refinery in the northeast.
But officials emphasized that the restrictions will largely freeze new exploration, while not disrupting projects already under way.
PUP, they said, were acting in the name of Clive's grudges; the Greens were attempting to disrupt mining projects they didn't like; and Labor were being opportunistic and hypocritical.
The companies, Odyssey Group and U.S. Information Systems, accuse the union of threatening to disrupt installation projects unless companies that have contracts with Local 3 do the work.
He said Mr. Nazir opposed polio vaccination in the region but otherwise did not disrupt government projects and cooperated with the local administration.
Critics continue today to argue that a principle of beneficence that requires persons, governments, and corporations to seriously disrupt their projects and plans in order to benefit the poor and underprivileged exceeds the limits of ordinary moral obligations and have no plausible grounding in moral theory.
The Taliban, still an active threat in Afghanistan, has vowed to disrupt the project if American firms are involved.
Even a short delay could disrupt the project's computerized system, which coordinates cues between images, landscape, sound design and performances.
A spokesman for Mr. McGreevey said he was pleased that the state attorney general was looking into the matter, as it may disrupt the project.
