CALGARY - Seven environmentalists are sitting quietly in the office of federal Environment Minister Jim Prentice in Calgary.
They say they won't leave until Prentice signs a promise about global warming in advance of climate talks in Copenhagen next month.
They want him to commit Canada to reducing greenhouse gas emissions by at least 25 per cent below 1990 levels by 2020.
David Wilson, who lives in the riding, says staff have already indicated the minister won't sign anything, and the protesters will be expected to leave when the office closes for the day.
Wilson says office staff have offered the group coffee and have been "extremely polite."
The protesters could face arrest if they refuse to leave.