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Where Do Greenhouse Gas Emissions Come From?

What are greenhouse gases? What activities cause the most emissions? And why are scientists and policymakers concerned? This comic breaks it down.

What Is the Future of Solar Energy?

Though solar energy provides a sliver of the world's electricity now, it is on a trajectory to expand rapidly.

What Is the Future of Wind Energy?

Humans have used windmills to capture the force of the wind as mechanical energy for more than 1,300 years. Today, wind energy is a small but fast-growing fraction of electricity production.

­­­How Do We Remove CO2 and Where Does it Go?

Carbon dioxide is a greenhouse gas that traps heat and warms the planet. Learn about science and engineering solutions to mitigate CO2 by removing it from the atmosphere and using or storing it safely.

What Role Do Batteries Play in Sustainability Solutions?

Innovations in energy storage are critical to the transition from fossil fuels to alternative sustainable energy sources.

Can Our Electricity Grid Run on Alternative Energies?

Connecting renewable, or alternative, energy sources with the grid presents both opportunities and challenges.

How Do We Predict Climate Change?

To explore and predict how the climate will change, researchers create computer models of the real world.

What Causes Smog?

The main components of photochemical smog, the hazy air pollution that can blanket Los Angeles and other urban areas, are ground-level ozone and particulate matter.

How Can We Reduce Plastic Pollution?

Plastic is incredibly useful in modern life, but the production and disposal of plastic generates greenhouse gases and hazardous waste.

How Can We Ensure Sustainable Access to Water?

The global supply of fresh water is dwindling. Natural and human causes can impact water availability, and scientific, technological, and policy solutions can protect access to water for all.

What Is the Evidence for Human-Caused Climate Change?

The warming we've seen over the past few decades is too rapid to be linked to changes in Earth's orbit and too large to be caused by solar activity.

What Are the Effects of Climate Change?

Global climate change has already had observable effects on the environment.


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