Climate change includes both the global warming driven by human emissions of greenhouse gases, and the resulting large-scale shifts in weather patterns.
The environmental effects of climate change are broad and far-reaching. They include effects on the oceans, ice, and weather and may occur gradually or rapidly. Climate change is an urgent problem that affects everything from human health and food security to immigration patterns and water resources.
To avoid the worst consequences of climate change, we’ll need to reach “net zero” carbon emissions by 2050 or sooner. Net zero means that, on balance, no more carbon is dumped into the atmosphere than is taken out.