Climate change is caused by greenhouse gases like carbon dioxide, methane, and nitrous oxide that are released into the air from sources like factories, agriculture, and deforestation. This traps heat in the atmosphere and warms the planet, causing phenomena like rising sea levels, melting ice caps, more extreme weather events, and shifts in temperature and rainfall patterns. If left unaddressed, climate change poses serious risks to human health through increased disease, hunger, and disasters, as well as economic and environmental impacts. Collective action is needed to reduce greenhouse gas emissions and mitigate the effects of climate change.