Grist List

How Central Park cools the entire planet

Like all urban parks, Central Park cools New York City through evaporation. That is, its plant life and ponds give off moisture, which takes heat energy with it. It's as if the park sweats.

Until recently, though, we didn’t know whether green spaces cool the planet as a whole.

Is this the perfect urban bike?

This bike, designed by custom bike maker Tony Pereira, took top prize in an Oregon Manifest competition to design the perfect urban utility cycle. Pereira's bike is intended as a transitional vehicle for people trying to make the switch from cars. It includes a stereo, a front-mounted locking "trunk," and an electric assist motor. (Plus, it has a cupholder, of sorts! That should appeal to the SUV crowd.)

Canada probably didn’t NEED that ice sheet, right?

If you thought you were melting over the summer, just be glad you're not an ice sheet that's been chilling out since before Europeans settled in Canada. Over the summer, two huge Canadian ice shelves in the Arctic shrunk down precipitously, report scientists from the University of Ottawa and Carleton University. One sheet had already split into two sections and just kept getting smaller; the other broke in half this year. Icebergs are breaking away and "pose a risk to offshore oil facilities and potentially to shipping lanes," reports the Associated Press. "Since the end of July, pieces equaling one and a half times to the size of Manhattan Island have broken off."

This is not normal behavior for an ice shelf this large and old, says the AP:

Critical List: MIT recreates photosynthesis; City of Austin goes 100 percent renewable

MIT created an "artificial leaf" that recreates photosynthesis.

In Germany, they've got so much wind-generated electricity, they’re giving it away.

Driving 75 mph isn't fuel efficient, ahem, Maine.

Austin's going to be the largest local government using only renewable energy to power its municipal buildings.

Economists: Every $1 of electricity from coal does $2 in damage to U.S.

We all knew coal is harmful -- we figured people just ignored that harm because of their profit margins. But according to the prestigious American Economic Review, harm from coal-fired electrical plants costs more than twice as much as the electricity they generate. All told, coal plants cause $53 billion in damage every year. And none of that even takes climate impacts into account.

Wrestling baby bears stop traffic

This is why we have national parks, people: So there's one place in the country where "share the road" means "stop your damn car so baby bears can have a little tussle."

MythBusters weigh in on motorcycle emissions

You've probably heard that motorcycles are more fuel-efficient than cars, and therefore better for the environment. I mean, they're practically bikes, right? It sounds plausible, but how do you find out if it's really true? The same way you find out if ANYTHING is really true: Ask the MythBusters, obviously.

China may emit more carbon per person than U.S. by 2017

China is now the biggest emitter of greenhouse gases in the world, but its per-capita emissions are still less than those of the average U.S. citizen. In six years, that could flip, says a new report from the Netherlands Environmental Assessment Agency that was sponsored by the European Commission. Current U.S. per-capita emissions are 16.9 […]

Global investment in clean energy blowin' the hell up

Global total new investment in clean energy 2004-10 ($BN)