Global warming also poses a substantial threat.

Today's warming poses a more immediate threat to Antarctica's abundant wildlife.

Global warming and a sea level rise potentially pose a great threat to the Isle of Man.

Few scientists doubt that the warming of the earth's atmosphere, caused by carbon dioxide and other greenhouse-gas emissions, poses a gigantic threat.

At the United Nations, he learned that global warming poses severe threats to small island nations and became deeply involved in the negotiations over climate change.

The very real threat that global warming poses to human existence cannot be left to tinkering with the tax structure.

Speier believes global warming poses a growing danger and negatively affects the environment.

Global warming poses a threat to this region and its permafrost.

According to a 2009 journal paper by UCL academics, climate change and global warming pose the biggest threat to human health in the 21st century.

Mr. Bush has said that global warming poses a problem but that there is not yet sufficient evidence to point to a solution.