A new study released last week by NASA's Goddard Institute for Space Studies (GISS) concludes that motor vehicles currently are the greatest net contributor to global warming. Cars, buses, and trucks release pollutants and greenhouse gases that promote warming, while emitting few aerosols that counteract it.

The researchers found that the burning of household biofuels for heating and cooking contribute the second most warming. Raising livestock, particularly methane-producing cattle, contribute the third most.

In contrast, the industrial and power sectors release many of the same gases, but they also emit sulfates and other aerosols that cause cooling by reflecting light and altering clouds. However, by 2050, electric power generation overtakes road transportation as the biggest promoter of warming, according to the study.

"Targeting on-road transportation is a win-win-win," study leader Nadine Unger said. "It's good for the climate in the short term and long term, and it's good for our health."

Oxfam has made a video to kick off their new campaign: Right to Know, Right to Decide. The campaign aims to achieve transparency about oil and gas companies' payments to foreign governments.

This free webinar on December 15th will provide you with an inside look at the programs and protocols that companies need to understand to effectively manage and report on their GHG emissions. It will also introduce best practices and solutions that enable successful reporting and results.

Register now for this event that will help participants to:

• Understand the current reporting program and protocol landscape including The Climate Registry, Carbon Disclosure Project, U.S. EPA, RGGI, AB32 and international programs
• Become familiar with critical reporting components and challenges
• Learn about best practices and principles for defining reporting content and ensuring quality
• Understand how to enable a comprehensive, auditable environmental system of record
• See how leading companies are going beyond reporting to define and implement mitigation strategies leading to millions of dollars in abatement savings while reducing their carbon emissions

From the makers of Story of Stuff, The Story of Cap & Trade looks at the proposed solution and exposes the devils in the details. More on Cap and Trade.

EBMUD has put together a residential pollution prevention guide for keeping toxins out of your wastewater. The comprehensive guide covers toxins like antibacterial products, automobile fluids, cleaning products, cooking oils, fats, grease, garden products, medicine, nanomaterials and other hazardous waste. You can learn more about EBMUD wastewater treatment here.

This short YouTube documentary exposes the sources of air pollution in West Oakland. Neighborhood factories pump heavy metals like lead into the air, lowering West Oakland residents' life expectancy by 10 years compared to other Oakland residents.