- an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.
Origin of global warming
Examples from the Web for global warming
The last straw was Heartland putting up a billboard with a picture of the Unabomber as emblematic of global-warming believers.The Insurance Industry’s Liberal Turn
July 10, 2013
The "deniers" are dangerously absolute in their rejection of global-warming claims.Blame the Smug Climate Warriors
December 19, 2009
“Global-warming momentum was dead long before Climategate happened,” said Marc Morano.'Climate Change Is a Myth'
December 7, 2009
One of the most common landfill gases, methane, acts like carbon dioxide on juice, with 23 times the global-warming potential.Will the Recession Kill Recycling?
July 11, 2009
- an increase in the average temperature worldwide believed to be caused by the greenhouse effect
Word Origin and History for global warming
by 1983 as the name for a condition of overall rising temperatures and attendant consequences as a result of human activity. Originally theoretical, popularized as a reality from 1989.
- An increase in the average temperature of the Earth's atmosphere, especially a sustained increase great enough to cause changes in the global climate. The Earth has experienced numerous episodes of global warming through its history, and currently appears to be undergoing such warming. The present warming is generally attributed to an increase in the greenhouse effect , brought about by increased levels of greenhouse gases, largely due to the effects of human industry and agriculture. Expected long-term effects of current global warming are rising sea levels, flooding, melting of polar ice caps and glaciers, fluctuations in temperature and precipitation, more frequent and stronger El Niños and La Niñas, drought, heat waves, and forest fires. See more at greenhouse effect.