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Global Warming 101 - Definition, Facts, Causes and Effects ...
A: Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth ...
Global warming - Wikipedia
Global warming is a long-term rise in the average temperature of the Earth's climate system, an aspect of climate change shown by temperature measurements and by multiple effects of the warming. The term commonly refers to the mainly human-caused observed warming since pre-industrial times and its projected continuation, though ...
Global Warming | Union of Concerned Scientists
Global warming is happening now. The planet's temperature is rising. The trend is clear and unmistakable. Every one of the past 40 years has been warmer than the 20th century average. 2016 was the hottest year on record.
What Is Global Warming? | Global Warming Facts
The main driver of today's warming is the combustion of fossil fuels. These hydrocarbons heat up the planet via the greenhouse effect, which is caused by the interaction between Earth's atmosphere ...
NASA Climate - Official Site
NASA’s Global Climate Change website hosts an extensive collection of global warming resources for media, educators, weathercasters and public speakers. Browse by topic and by media type, including videos, social media shareables, infographics, quizzes and interactives.
Global Warming | Definition of Global Warming by Merriam ...
Global warming definition is - an increase in the earth's atmospheric and oceanic temperatures widely predicted to occur due to an increase in the greenhouse effect resulting especially from pollution. How to use global warming in a sentence.
Global Warming | Monitoring References | National Centers ...
A dramatic global warming, at least partly associated with the record El Niño, took place in 1998. This warming episode is reflected from the surface to the top of the troposphere.