Climate change refers to the long-term changes in Earth's climate patterns, including temperature, precipitation, and weather events, that have been observed over several decades. The Earth's climate has always changed naturally over time, but the current changes are happening at an unprecedented rate, and scientists have concluded that human activity is the primary cause.
The primary driver of climate change is the increase in greenhouse gases, such as carbon dioxide, methane, and nitrous oxide, in the atmosphere. These gases trap heat from the sun that would otherwise escape back into space, causing the Earth's temperature to rise. Human activities such as burning fossil fuels, deforestation, and agriculture are the main sources of these greenhouse gases.
The impacts of climate change are wide-ranging and significant. They include rising sea levels, more frequent and intense heatwaves, droughts, floods, and extreme weather events such as hurricanes and wildfires. These changes can have devastating effects on ecosystems, human health, agriculture, and infrastructure.