A teacher openly crusades for better school food—and gets seared

Mendy Heaps, a stellar English teacher for years, had never given much thought to the food her seventh-graders were eating. Then her husband, after years of eating junk food, was diagnosed with cancer, diabetes ,and high blood pressure and suddenly the french fries, pizza and ice cream being served in the cafeteria at rural Elizabeth Middle School outside Denver, Col., took on a whole new meaning.

Solar greenhouses, Chinese-style

In Europe and North America, eating fresh perishable produce out of season usually means hauling it in refrigerated containers from regions where it’s in season, or growing it locally in heated greenhouses…Although these greenhouses boast extremely high yields, the amount of fuel needed to heat them generally far exceeds the amount that would be needed to haul an equivalent amount of produce from a region where it’s in season.

Stunner: Nature’s review of 20 years of field studies finds soils emitting more C02 as planet warms

One of the single greatest concerns of climate scientists is that human-caused warming will cause amplifying feedbacks in the carbon-cycle. Such positive feedbacks, whereby an initial warming releases carbon into the air that causes more warming, would increase both the speed and scale of climate change, greatly complicating both mitigation and adaptation.

The breakdown of politics, continued

One of the pleasures of blogging is that the dialogue which it sometimes provokes, and my recent post reflecting on the health care vote and the apparent breakdown of ‘normal’ political processes produced a couple of thoughtful responses which seemed to me to take the discussion on.

Drill baby drill – a second reality check

Last week President Obama announced that he would open [some] federal waters to oil and gas exploration and development… A stated objective of this move is to reduce United States dependence on foreign oil. Implied within the objective is that opening these offshore areas to oil drilling will lead to a long-term increase in the U.S. oil production rate. The possibility of that happening is zero. The best that can be hoped for is a slight decrease in the annual decline rate of U.S. oil production.

Children, the childless, and diverse human ecosystems

Parents love their childless friends, often their only source of grown-up activities like, say, uninterrupted conversation. Or drinking and shooting pool (mmm…). Plus they’re good babysitters! Unchilded people love having relationships with kids. Children love hanging out with adults who are independent and adventurous; they need uncles and aunties. Human communities are ecosystems, and in all ecosystems diversity is the key to health and resilience.

Barriers to Eating Sustainably, Real and Imagined

During the period of my life when I was a professional smart-ass (ie, my adolescence), I used to complain to my mother that even the day after she went grocery shopping, there was never any food in the house, only the component ingredients of food. As I teenager I wanted to eat like my peers who seemed to have an endless supply of chips and soda around. To have to come home from school and actually scramble eggs or make a sandwich seemed horribly unfair. My mother and step-mother expressed little sympathy.

Obama’s second chance on the predominant moral issue of this century

Why not use the president’s tack: just talk about the need for clean energy and energy independence? Because that approach leads to wrong policies, ineffectual legislation larded with giveaways to special interests, such as the Waxman-Markey bill in the House and the bills being considered now in the Senate. The fundamental requirement for solving our fossil fuel addiction and moving to a clean energy future is a rising price on carbon emissions.

Peak asphalt: the return of gravel roads

Peak oil – arriving or already arrived – is placing a tremendous strain on the world’s economy. Because of this strain, the kind of money used for maintaining roads is quickly disappearing and the result is the return of unpaved roads. … in the coming years we’ll see more and more roads returning to gravel, as it was commonplace in the Western World up to about 50 years ago.