Archive | Environment

Spring Migration at Lake Calhoun

We may live in the city, but nature, though often drowned out, is still there and capable of putting on a show. I live near Lake Calhoun and this is spring migration season. This year the birds are coming through, and in greater numbers than usual. We had an early thaw this year, but normally […]

Continue Reading 4

Map Monday: World Carbon Prices

Via Carbon Brief, here’s an (interactive) world map showing the price people pay for a pound of CO2 in each nation around the world. The US has a “per-ton of CO2” price of 85 cents, versus $26.21 in Germany or $3.79 in Canada (for example). Note that this is the “effective carbon price,” which is […]

Continue Reading

Chart of the Day: Bicycling Health Benefits at Different Pollution Levels

This chart from the Financial Times is impossible to pass up, showing the health benefits of urban bicycling at different levels of particulate pollution. The article includes a helpful cycling benefits chart generator, where you plug in the current Twin Cities’ PM2.5 air quality measurement and it gives you a cool chart showing the relationship between exercise […]

Continue Reading

Chart of the Day: US CO2 Emissions Trends by Sector

Via Fast Company, here’s a chart showing the national CO2 emissions trends from 1990 to 2014, divided up by sector as a percentage of the whole. As you can see, though emissions relative to each other remain largely stable, there is clear trend where transportation emissions are becoming a larger piece of the pie. Here’s the chart: Charlie […]

Continue Reading

Chart of the Day: Costs of Urban Travel by Mode

Here’s a chart from an wonky, slightly-old, provocative book called Transportation for Liveable Cities by a Pennsylvania transportation professor named Vukan Vuchic. It shows Vuchic’s estimates of the total costs for different travel choices in a dense urban city, showing a peak-hour car trip with tolls and parking, an off-peak car trip without those costs, a typical […]

Continue Reading