This post is by Sheryl Canter, an Online Writer and Editorial Manager at Environmental Defense.

As 2007 draws to a close, we also approach the end of our blog's first year. Well, okay, it started in February, but it's close. We've tried to bring you a blend of the science and policy of climate change, and be a resource for you in explaining these issues to others. How've we been doing? We want your feedback!

We also need your help in another quarter. The end of the year means fundraising for non-profits like ours. We rely on you to fund the important work we do.

Please donate now, and here's wishing for a cool, green New Year for us all!

This post is by Sheryl Canter, an Online Writer and Editorial Manager at Environmental Defense.

Sometimes it can seem like we're not making any progress at all on the global warming front, but we are! Here are ten important policy victories from 2007.

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This post is by Sheryl Canter, an Online Writer and Editorial Manager at Environmental Defense.

If you need some last minute gift inspiration, check out our annual round-up of earth-friendly ideas.

We'll be off for a few days, so we won't be posting again until next Thursday. Have a great holiday.

This post is by Lisa Moore, Ph.D., a scientist in the Climate and Air program at Environmental Defense.

Here's an interesting way to look at greenhouse gas emissions. The WorldMapper project has assembled hundreds of global maps in which nations are resized according to different variables - for example, total population and carbon emissions:

From WorldMapper. Reproduced with permission.

From WorldMapper. Reproduced with permission.

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This post is by Vickie Patton, Deputy General Counsel at Environmental Defense, and a former attorney in the EPA's General Counsel's office.

Two years ago, California asked the U.S. Environmental Protection Agency (EPA) to pave the way for landmark standards to limit global warming from motor vehicles. Seventeen other states plan to implement the Clean Car standards, pending the EPA decision. But today - after two years of stalling - EPA said no. This decision is virtually unprecedented; EPA has granted similar requests over 50 times in 40 years.

The Bush administration is putting the brakes on state action to address the global warming crisis. Doing nothing about global warming is bad enough - but going out of your way to block the state leaders who are taking action is just plain shocking.

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This post is by Lisa Moore, Ph.D., a scientist in the Climate and Air program at Environmental Defense.

All year long we've been monitoring developments in climate science, and posting about the important new developments. I thought now would be a good time to look back over 2007 and summarize what we've learned.

Here are ten noteworthy science stories we covered in 2007:

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This post is by Mel Peffers, Air Quality Project Manager at Environmental Defense.

Many people idle their car engine in winter because they think it needs time to warm up. Not true! Today's fuel-injected engines don't need a warm-up period, and idling for long periods can lead to excessive engine wear.

Worse, cars idling for over 10 seconds use more gas and create more global warming pollution than simply restarting the engine. Surprised? It's true. The 10-second rule has been proven empirically.

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This post is by Martha Roberts, an economist at Environmental Defense. It's the first of a three-part series on carbon sequestration - storing carbon or carbon dioxide (CO₂) in soils, trees, geological formations, and oceans.

1. Biological Sequestration
2. Geological Sequestration
3. Ocean Sequestration

Global warming is occurring because - day after day, hour after hour - human activities pump large amounts of greenhouse gases into the atmosphere. One way to decrease emissions is to store carbon or CO₂ someplace other than the atmosphere.

There are two vastly different ways of sequestering carbon: biological and geological. The topic of this post is biological sequestration, which is among the biggest of the "low hanging fruits" for making quick, substantial cuts in emissions.

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This post is by Peter Goldmark, Program Director, Climate and Air, Environmental Defense. Also see his previous dispatch from Bali and background on the meetings.

As I reported in my last bulletin from Bali, after much sturm und drang, countries finally agreed to a two-year process that can lead to the next international climate change treaty in 2009 - the "Bali Roadmap".

Deforestation was a major topic at the Bali conference, and ended up being one of the most positive components of the Bali Roadmap. Environmental Defense helped lead the way there.

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This post is by John Balbus, M.D., M.P.H., Chief Health Scientist at Environmental Defense.

Nearly 300 people in northeast Italy have come down with a virus formerly limited to Africa and Asia called Chikungunya Fever (CHIKV). It's not usually fatal, but it's not pleasant. Sufferers experience fever, joint pain, muscle pain, and headache. In the Makonde language, "chikungunya" means "that which bends up" - a reference to the victim's contorted posture.

Dean Menke, a policy analyst here, had the disease when he was living in East Timor: "I thought I was going to die - I wished I would die just so the pain would stop. If it wasn’t for the hallucinations from the 104° fever, the whole ordeal would have been a waste."

CHIKV virus is very rare in Europe, and until now, it was only seen in travelers returning from areas with epidemics. According to a report [PDF] from the European Center for Disease Prevention and Control, this is the first time CHIKV virus has spread through local means within the European mainland. And that's why climate change must be considered.

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