Percentage of 16-year-olds licensed to drive has dropped

The percentage of 16-year-olds with a U.S. driver’s license has decreased sharply in the last decade, from 43.8 percent in 1998 to 29.8 percent in …

Sing a song of sustainable cities

Curitiba’s Jaime Lerner on why the car is like your mother-in-law

Public investment: the counterargument

Geek humor

Volker Weber provides a strong counterargument to my posts favoring public investment (very funny, if you are a certain kind of geek):

Protests arise over British government’s “eco-town” plans

The British government is preparing a shortlist of sites for high-density, carbon-neutral eco-towns, but is coming under consistent protest from villagers who don’t want ’em …

Deep thought of the day

As rising energy prices and better urban planning push the affluent back to city centers, the poor and working class will be pushed out to …

Cities worldwide will turn off lights for Earth Hour

Mark your calendar for March 29, when cities around the world will switch off non-critical lights at 8:00 p.m. for an awareness-raising Earth Hour. At …

Let buildings heat and cool themselves

How to kill coal in 10 years

We know that coal is the enemy of the human race, what with carbon emissions, deadly air pollution, and unsafe and destructive mining practices. The supply of coal is becoming more problematic as well: recently, a Wall Street Journal article described a "coal-price surge," and Richard Heinberg has warned that coal may peak much sooner than most people expect. So what's to like? Not much. But since coal-fired plants provide almost half of our electricity, we can't get rid of coal unless we find either a way to replace it or a way to reduce the use of electricity. Recently, Gar Lipow has discussed how friggin' cheap it would be to replace coal, and Bill Becker has pointed to several studies that show how renewables could replace coal. I will argue in this post that if buildings could produce all the space and water heating, air conditioning, and ventilation that they need, we wouldn't need any coal. Heating and cooling buildings and water now consume 30 percent of our electricity and 32 percent of our natural gas. If, for instance, geothermal exchange units (also known as geothermal heat pumps) were installed under every building, and an appropriate amount of solar photovoltaics were installed on roofs in order to power those units, we wouldn't need to burn 60 percent of our coal because we would not need 30 percent of our electricity. And because we could redirect our natural gas from warming and cooling into electricity generation, we could get rid of the remaining coal, replacing it with natural gas. In other words, the buildings would both destroy electrical demand and free up natural gas, until renewables come online and replaced natural gas in turn. If we did this within a 10-year timeframe, we could generate millions of green-collar jobs, create new industries, and help the rest of the world kill off the rest of coal. All of the data that I use in this post is available online in a spreadsheet I created called "EnergyUse." It has tabs for electrical use, natural gas use, my calculations concerning coal, and some notes on the data, all of which comes from the Department of Energy's Energy Information Administration (EIA). So let's get electricity literate, and take a look at how electricity (and natural gas) are used in this country, so that we can figure out how to kill coal:

Lance Armstrong: more bike commuters, please

A breathless appraisal of Lance’s new bicycle mecca and mission

Lance Armstrong will soon unveil his 18,000-square-foot Austin-based bike shop, Mellow Johnny's (named after the Tour de France's yellow jersey -- or "maillot jaune"). The goal of the shop is to promote bike culture and bike commuting: "This city is exploding downtown. Are all these people in high rises going to drive everywhere? We have to promote (bike) commuting..."Showers and a locker room will allow commuters who don't have facilities at their offices to ride downtown, store their bikes at the shop, bathe and catch a ride on a pedicab or walk the rest of the way to work. Armstrong's advocacy could move mountains. Cycling has always been a trend-driven sport. As far back as the 1800s, manufacturers promoted their technological innovations by sponsoring racers. In the U.S., bike sales boomed in the early '70s (reaching a high they've never quite touched again) due to a sudden craze for road bikes.

Engineer plans to sell compressed-air car in India within a year

Could folks in India be driving a car that runs on compressed air within a year? French engineer Guy Negre says it will be so. …

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