Up to a point, GDP does tell us important facts about people's lives, livelihoods and aspirations. Living on a dollar a day is miserable no matter how you look at it. Choking on economic growth, of course, is equally bad.

In short, Earth Day participants not only get alot done, they also demonstrate that human beings everywhere are driven by their faith, their conscience, their sense of duty, or by a moral imperative to save the planet. It is staggering to think about one billion people working together in a collective action.

It's not enough anymore to draw out the hard-core environmentalists on Earth Day. In an over-populated, over-subscribed world, we have to mainstream the commitment to conservation and environmental action.

One way of conceiving environmental awareness is that it's all about fighting our desire for instant gratification. But there is another way to think about instant gratification that an ecological worldview opens to us.

The world's growing population -- expected to exceed 9 billion by 2050 -- is predicted to double demands on our planet's dwindling supply of food, fresh water, energy and other resources we can't live without.

For people looking to put their finances in the black, a new report suggests they may be wise to look green. That's according to a report released ...

They empower shoppers to express their dissatisfaction with food production as it is now. By "voting with their dollars," customers can put pressure on Corporate America, by taking business away from it.

Artists, can touch millions of people with a song, book or movie, and can play a key role in moving the global economy toward a greener future. The time to act is now. We need sustainable, low-carbon economies that create more and better jobs.

Just as Kennedy will forever be the president that inspired a nation to accomplish the impossible, President Obama has the opportunity to be one to usher the world into the Energy Age.

The financial costs linked to climate change represent the biggest threat to the global economy, according to Nobel Prize winning economist Joseph Stiglitz of Columbia University.

Once considered one of the most conservative cities in the country, and known largely for its industrial manufacturing history, Indianapolis may seem like an unlikely leader in the movement to create more vibrant, healthy, equitable communities.

When support green job training programs, we're not just investing in America's women. We're investing in their kids, their partners, their parents, and their neighbors. We're building a stronger, more resilient, healthier country for us all.

If we hope to protect America's waterways, we need to support the EPA in enforcing Clean Water Act safeguards. One of the most important ways to do that is by investing in green stormwater infrastructure -- and we'll put millions of Americans to work in the process.

Green industries challenge that economic model. They prove that businesses can succeed without destroying our resources and our health.

It's hard to imagine why anyone in this country would fail to get behind a sector like clean energy, which is putting Americans to work while keeping our air and water healthy. It's even harder to understand why they would actively try to destroy it.

The notion of job creation as a solution to poverty reduction is nothing new. But what if we could create jobs that are not only sustainable but also help to sustain our planet?

It's not every century that the auto industry and the environmental movement agree on anything.

The so-called "green economy," which governments, business leaders, and some environmental organizations touted at last month's summit in Rio de Janeiro, is actually a greenwashed economy.

Our economy is going to grow precisely because we are taking care of our environment, and the leading job creators are going to be companies that specialize in sustainability and the green economy.