Water cyclists: An epic ride to raise awareness of a scarce resource

A year and a half ago, two Dutchmen set out by bike to spread the word about the global water crisis. Fourteen thousand miles later, they say the real work still lies ahead -- but first, they'd like to kick …

Election 2012

Rick Santorum wants women to have lots of babies, whether they like it or not

Rick Santorum isn't just a climate denier -- he's a contraception denier. He believes contraception exists, but he's eying ways to deny you access to it.


C1ty By NuMb3r5: A formula for growing better cities

Theoretical physicist Geoffrey West says he's found the secret to bringing cities back from the brink. It's all in the numbers, he says. But numbers also may be our downfall.

Climate & Energy

Baby boomers are the worst for the climate

At what age does a person do the most damage to the climate? According to a new study, between about 45 and 80. Starting at birth, a person’s carbon dioxide emissions sprint up and up and up, until they hit …


Franzen on love, sex, population, birds, and making the world less toxic

If you’ve read the bestseller Freedom, you won’t be surprised to hear that novelist Jonathan Franzen describes himself as “a long-time green.” One of the book’s main characters, Walter Berglund, is “greener than Greenpeace,” Franzen tells us on the first …

7 Billion: What to expect when you’re expanding—a special series

How to feed 7 billion of us without ruining the planet

Now that we’re surrounded by 7 billion of our closest friends, it’s probably a good time to talk about how we’re going to feed them. The government, along with corporations like Monsanto, Syngenta, Dupont, and others who are part of …

Climate & Energy

Critical List: 7 billionth baby born; OWS to use green generators

The world's 7 billionth baby has been born in the Philippines. (How do U.N. arbiters know she's the seven billionth? They don't: it’s just symbolic.) It snowed on the East Coast, and "virtually every site north of Maryland to Maine …

7 Billion: What to expect when you’re expanding—a special series

Climate change is our biggest challenge, says McKibben — but we need to keep working on population

Photo: TakverIn the late ’90s, environmental activist and author Bill McKibben wrote a book about his and his wife’s decision to have only one child, connecting their personal choice to global issues of population growth and sustainability. These days, McKibben …


This is the weekend we hit 7 billion

Well, the 7 billionth baby is expected to arrive around Halloween. Spooky! Here's what you should read to prepare. "I am the population problem." It's easy to blame developing countries, but if you want to find the source of the …