Climate 411

Cool New Energy Technologies

The author of today’s post, Sheryl Canter, is an Online Writer and Editorial Manager at Environmental Defense.

We know we need energy to power, well, everything. And we know that if we continue to get our power mainly from fossil fuels we’re in big trouble. So where do we get it?

Most people have heard about solar power and wind power, but there are some other alternatives that may be new to you.

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Posted in Energy / Comments are closed

Farm Animals and Methane

This is Part 1 of a three-part series on Food and Farming.

1. Increased CO2 and Food Quality
2. Farm Animals and Methane
3. “Food Mile” Complexities


The authors of today’s post are Lisa Moore, Ph.D., a scientist in the Climate and Air program, and Tim Male, Ph.D., a senior ecologist in the Land, Water & Wildlife program.

For the second course in our food series, let’s start with some pie – specifically, Bill’s greenhouse gas pie showing the contribution of different greenhouses gases to global warming. The first chart shows that methane is the second largest contributor to global warming.

Globally, nearly half of that hefty methane slice comes from agriculture. What causes these emissions, and how can we reduce them?

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Posted in News / Read 8 Responses

Climate News: Creeping Shrubs and Record Heat

The author of today’s post, Lisa Moore, Ph.D., is a scientist in the Climate and Air program.

This week I came across several interesting articles related to climate, but two in particular caught my eye. In the first, scientists found that excess carbon dioxide (CO2) may be what’s leaving livestock with less food to eat. The other study explores the role of greenhouse gases on the record-breaking heat Americans experienced in 2006.

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Posted in Plants & Animals / Comments are closed

Fossil Fuels and Biofuels

This is Part 3 of a three-part series on Vehicle Fuels and Technology.

1. Plug-in Cars: The Lowdown
2. Hydrogen Fuel Cell Vehicles
3. Fossil Fuels and Biofuels


The author of today’s post, Sheryl Canter, is an Online Writer and Editorial Manager at Environmental Defense.

This last post in our series on Vehicle Fuels and Technology gives an overview of fossil fuels and their alternatives. You will see how crude oil pumped from the ground is transformed into everything from solvents to street tar. And you’ll learn which biofuels can be substituted for fossil fuels.

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Posted in Cars and Pollution / Read 3 Responses

Lies, Damn Lies, and Statistics

The author of today’s post, Lisa Moore, Ph.D., is a scientist in the Climate and Air program.

On Wednesday, the DailyTech Blog said that an update to a 2004 survey shows that the scientific community is moving away from a consensus that humans are causing global warming. The survey was submitted to the journal Energy and Environment, but is as yet unpublished.

So is it true? In a word, no, because scientific consensus cannot be surmised from subjective surveys.

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Posted in News / Read 8 Responses

New Report on Cars and Carbon

The author of today’s post, John DeCicco, Ph.D., is a Senior Fellow for Automobile Strategies at Environmental Defense.

How much carbon dioxide (CO2) are cars emitting, and is it getting better or worse? The answer is in our new report on Automakers’ Corporate Carbon Burdens. It’s the third in a series we began in 2002, and covers 1990-2005. Some findings of note:

  • Toyota and BMW have shown that it’s possible to cut the CO2 emissions rate while enjoying strong sales growth – a lesson to the other 10 automakers we examined, whose emissions rates all increased in 2005 compared to 1990. Automakers can significantly reduce carbon emissions through creative design and incremental enhancement of conventional technologies.
  • The average CO2 emissions rate from new vehicles fell 3 percent from 2004 to 2005 – the first drop in nearly two decades. We probably can thank high gas prices for this since it made new car buyers think about fuel efficiency. Gas-guzzling truck-based SUVs became less appealing, and this accelerated the shift to car-based SUVs with better fuel efficiency.

But we still have a long way to go. Despite the one year drop, the emissions rate remains 4 percent higher than it was in 1988.

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Posted in Cars and Pollution, Greenhouse Gas Emissions / Read 6 Responses