What is climate change? | Live Science Otesanya David March 29, 2022

What is climate change? | Live Science

What is climate change? | Live Science


Climate change is any long-term alteration in average weather patterns, either globally or regionally. Climate change has occurred many times in Earth’s history, and for many different reasons. The changes in global temperature and weather patterns seen today, however, are caused by human activity. And they’re happening much faster than the natural climate variations of the past. 

Scientists have many ways to track climate over time, all of which make it clear that today’s climate change is linked to the emission of greenhouse gases, such as carbon dioxide and methane. These gases trap heat from the sun’s rays near Earth’s surface, much like the glass walls of a greenhouse keep heat inside. Small changes in the proportions of greenhouse gases in the air can add up to major changes on a global scale. 


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