Climate Change Climate change describes the ways in which the Earth’s climate changes slowly over time. In the past, the Earth’s climate has been colder and hotter than it is now. Scientists have discovered that human activities, mostly the burning of fuels, are causing the climate to get hotter much faster than normal. This increase in temperature is causing ice in the Earth’s polar regions and glaciers to melt faster than normal, leading to rising sea levels.. These changes are affecting living things and people in many ways. As the sea level rises, coastal areas around the Earth are at risk of flooding. Scientists have also discovered that hotter temperatures are causing more extreme weather. There are longer droughts and floods, stronger hurricanes and bigger wildfires.
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