Are climate skeptics right?

It's evident the debate over climate change is a heated one. Are skeptics clouding the public judgment for money? Are climate-change believers merely alarmists who risk the present for the future?

Can baking soda save the environment?

One company's SkyMine technology aims to capture industrial carbon dioxide emissions and turn them into an endlessly useful product: Baking soda. But how do pollutants become a household staple?

Can we bury our CO2 problem in the ocean?

Carbon dioxide released from burning fossil fuels is a prime suspect in global warming. Could we mitigate the problem by burying the CO2 deep within the ocean?

Have we reached peak oil?

Oil is a nonrenewable resource. Have we found all the oil there is to find, or is there more out there somewhere? What's the best way to wean ourselves from our oil dependency?

How can adding iron to the oceans slow global warming?

Iron is an essential component of the human body. Could it also be the answer to the problem of global warming?

How Carbon Footprints Work

While actual footprints measure size, weight and speed, carbon footprints measure how much carbon dioxide (CO2) we producein our daily lives. In this article, we'll learn how carbon calculators come up with your personal total, what it means and how to reduce your CO2 footprint.

How Carbon Offsets Work

Carbon offsets are a form of trade that funds projects that reduce greenhouse gas emissions. Learn about carbon offsets and carbon offset programs.

How Carbon Tax Works

How do we reduce greenhouse gas emissions? A carbon tax is one answer. A simpler alternative to cap-and-trade schemes, a carbon tax encourages energy efficiency and reduced consumption.

How Carbon Trading Works

Carbon trading, sometimes called emissions trading, is a market-based tool to limit greenhouse gases. The carbon market trades emissions under cap-and-trade schemes or with credits that pay for or offset GHG reductions.

How China's Pollution Sniffers Work

In an effort to detect areas with poor air quality, China is training people to sniff out harmful levels of pollution. But what effect does this have on the human body? Learn about how the brain identifies and distinguishes among scents as well as new odor-detecting technology.

How do you clean up an oil spill?

Oil spill cleanup is often done through containment and skimming the oil off the surface of the water. Learn about oil spill clean-up methods.

How Earth 911.org Works

You've finally cleaned out your garage. Four cans of paint, a dead car battery and a circa 1991 Nintendo sit before you. But where in the world do you recycle these items?

How Earthwatch Works

Do you want to go on a volunteer vacation where you observe grey whales and save the world? The nonprofit organization Earthwatch sends volunteers like you to assist scientists on expeditions all around the world.

How Eco-terrorism Works

Protecting the Earth is serious business for a radical group of environmental and animal activists dubbed eco-terrorists. Who are they? Why does the FBI consider them a top priority?

How Ecofeminism Works

Thousands of women around the world choose to combat ecological problems -- they're known as ecofeminists. But what would you do if you found out your house sat atop a toxic waste dump?