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Studies show that solar variability has played a role in past climate changes. For example, a decrease in solar activity coupled with increased volcanic activity helped trigger the Little Ice Age. The above graph compares global surface temperature changes (red line) and the Sun's energy that Earth receives (yellow line) in watts (units of ...
Human activities have been the main driver of climate change, primarily due to the burning of fossil fuels like coal, oil and gas. Concentrations of the key greenhouse gases have all increased since the Industrial Revolution due to human activities.
As greenhouse gas emissions blanket the Earth, they trap the sun’s heat. This leads to global warming and climate change. The world is now warming faster than at any point in recorded...
Here’s a rough breakdown of the factors that are driving climate change. Some amount of climate change can be attributed to natural phenomena.
Both human-made and natural factors contribute to climate change: Human causes include burning fossil fuels, cutting down forests, and developing land for farms, cities, and roads. These activities all release greenhouse gases into the atmosphere.
Vital Signs of the Planet: Global Climate Change and Global Warming. What is the “greenhouse effect”? What is causing it? Are humans to blame? What does solar irradiance have to do with it? Answers here.
Brief descriptions of some of the key scientific observations that our planet is undergoing abrupt climate change. Causes. A concise discussion of the primary climate change causes on our planet. Effects. A look at some of the likely future effects of climate change, including U.S. regional effects. Vital Signs.