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Global warming | Definition, Causes, Effects, Solutions, & Facts ...
Global warming, the phenomenon of increasing average air temperatures near Earth’s surface over the past one to two centuries, happens mostly in the troposphere, the lowest level of the atmosphere, which extends from Earth’s surface up to a height of 6–11 miles.

Global Warming - NASA Science
Global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.

Global Warming - National Geographic Society
People often use the terms “global warming” and “climate change” interchangeably, but they are different. Global warming refers to Earth’s rising average temperature, while climate change refers to changes in weather patterns and growing seasons around the world.

Climate change: global temperature - NOAA Climate.gov
Human activities, principally through emissions of greenhouse gases, have unequivocally caused global warming, with global surface temperature reaching 1.1°C above 1850-1900 in 2011-2020.

Climate change - Wikipedia
Present-day climate change includes both global warming —the ongoing increase in global average temperature —and its wider effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate.

Global Warming 101 - Definition, Facts, Causes and Effects of ... - NRDC
What is global warming? Global warming causes, effects, extreme weather, facts, and relation to climate change.

Climate change: Facts, news, features and articles about our warming ...
Learn how global warming and extreme weather are harming our planet with the latest climate change news, features and articles from Live Science.

Basics of Climate Change - US EPA
The earth's climate is changing. Multiple lines of evidence show changes in our weather, oceans, ecosystems, and more. The buildup of greenhouse gases in our atmosphere and the warming of the planet are responsible for changes.