Talking without permission is now forbidden:

The federal agency responsible for protecting Arctic polar bears has barred two Alaska scientists from speaking about polar bears, climate change or sea ice at international meetings in the next few weeks, a move that environmentalists say is censorship.

The rule was issued last month by the U.S. Fish and Wildlife Service but was made public this week. The federal government has proposed listing the polar bear as a threatened species, and the wildlife agency is receiving public comment on the proposal.

“It’s a gag order,” said Deborah Williams, a former high-level Interior Department official in Anchorage who received documents Wednesday from Alaska scientists who chose to remain unnamed. The documents make the subjects of polar bears, climate change and sea ice off limits to all scientists who haven’t been cleared to speak on the topics.

Two of the memos are copies of those prepared for Craig Perham and Janet Hohn, who are traveling to Russia and Norway this month and in April. The scientists “will not be speaking on or responding to these issues” of climate change, polar bears and sea ice, the memos say. Before any trip, such a memo must be sent to the administrator of the Fish and Wildlife Service in Washington.

According to the memos, agency scientists must obtain a memorandum designating which official, if any, is allowed to respond to questions, particularly about polar bears, and include “a statement of assurance that these individuals understand the Administration’s position on these issues.”

There is only one reason to do something like this: to make sure that scientists cannot use science to contradict the statements of the Administration or highlight the incorrectness of its policy. To make it easier for the Administration to lie, in other words. And since these scientists are dealing with the effects of global warming, it seems clear that the Administration intends to lie about global warming, its effects, or their global warming policy.