The top 10 green stories of the year

Photo: iStockphoto 10. A Stern reminder In October, venerable economist and senior U.K. government adviser Sir Nicholas Stern released a...

Discuss

People talk about the "politicization" of science all the time, usually in the form of an accusation designed to paint an opponent as biased or corrupt. Let's take a moment to think about the term and what it means.

Science is a multi-layered, collective, and impersonal process consisting of three parts:

1. individual scientists working under the scientific method,
2. the results of the individual scientists undergo peer-review and are published for the community to evaluate, and
3. important claims are then re-tested in the "crucible of science" -- they are either reproduced by independent scientific groups or have their implications tested to insure consistency with the existing body of scientific knowledge.

‘The null hypothesis says warming is natural’–An inappropriate test, and one that would fail anyway

(Part of the How to Talk to a Global Warming Skeptic guide)

Objection: Natural variability is the null hypothesis; there must be compelling evidence of an anthropogenic CO2 warming effect before we take it seriously.

Answer: The null hypothesis is a statistical test, and might be a reasonable approach if we were looking only for statistical correlation between increasing CO2 and increasing temperature. But we're not -- there are known mechanisms involved whose effects can be predicted and measured. These effects are the result of simple laws of physics, even if their interactions are quite complex.

Social and environmental entrepreneurs have a lot to teach big business

Solutions to sustainability challenges come in various forms, colors, and strengths. Some are compliance-driven and done grudgingly. Some are citizenship-led...

Umbra on eco-choices

Dear Umbra, While I usually love your column, I have to take issue with encouraging people to eat sushi. This...

‘Mars and Pluto are warming too’–No they aren’t — and what if they were?

(Part of the How to Talk to a Global Warming Skeptic guide)

Objection: Global warming is happening on Mars and Pluto as well. Since there are no SUVs on Mars, CO2 can't be causing global warming.

Answer: Warming on another planet would be an interesting coincidence, but it would not necessarily be driven by the same causes.

The only relevant factor the earth and Mars share is the sun, so if the warming were real and related, that would be the logical place to look. As it happens, the sun is being watched and measured carefully back here on earth, and it is not the primary cause of current climate change.

It’s disheartening

... can be found here (hat tip to pollster.com).

Here's the important result:

American voters tend to see Global Warming as a serious problem but are divided as to whether it's caused by human activities or long-term planetary trends.

This is important because:

Heat, hotness, and hotitude

Here are the second five of my "Top 10 climate stories of 2006," in no particular order. (The first five are here.)

2005 was hot: In early 2006, it was revealed that 2005 was a statistical tie with 1998 for the hottest year of the past 400. However, 1998 was warmed by the biggest El Nino of the 20th century, while 2005 had no such help. That means something else contributed to making 2005 so warm, and that something was almost certainly human activity. With a mild El Nino going on right now, my prediction is that 2007 will eclipse 1998 and 2005 as the hottest year of the instrumental record.

Like a Top 10 list, without 10

This isn't a top ten list -- I couldn't find that many signs of hope! And yes, I realize that some items on the list are only holding actions. The exercise was a little depressing; I had to wade through a year's worth of stories describing ecological devastation to come up with these.

Given all that, I would still say that 2006 was the best year the cause of environmentalism has seen in decades. I suspect that Grist, along with its readers and commenters, played a bigger part in that than most realize. May that trend continue and accelerate through 2007 and beyond. The list begins below the fold: