Global warming is the increase in the average temperature of the Earth's surface over time. It's caused by greenhouse gases, which are released into the atmosphere when fossil fuels like coal, oil, and natural gas are burned. These gases trap heat from the sun, causing the Earth to warm. 

Here are some effects of global warming: 

Climate change

Global warming causes climate change, which is a change in weather patterns and growing seasons. 

Rising sea levels

As the ocean warms, glaciers, ice caps, and ice sheets melt, causing sea levels to rise. This can lead to flooding in coastal areas. 

Ecosystem disruption

Higher temperatures are altering ecosystems, forcing animals to migrate to cooler places. 

Extinction of species

Scientists predict that many species will go extinct if nothing is done to lower global temperatures. 

Health issues

Increased air pollution and the spread of conditions favorable to pathogens and mosquitoes can lead to more allergies, asthma, and infectious disease outbreaks. 

The international community has recognized the need to keep warming well below 2°C and pursue efforts to limit it to 1.5°C. 

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As greenhouse gas emissions blanket the Earth, they trap the sun's heat. This leads to global warming and climate change. The world is now warming faster than at any point in recorded history. Warmer temperatures over time are changing weather patterns and disrupting the usual balance of nature.