The hypocritical companies include Google, AT&T, DuPont, and PepsiCo.
New York City wants to restore its oyster population, one recycled toilet bowl at a time.
Most carbon emissions result from economic activity such as commuting and running machines at workplaces.
The fast-growing city could get new light rail, bus rapid transit, and more -- but first, there are some hurdles.
But gas still isn't the country's biggest source of greenhouse gas pollution. That would be oil.
The "adventure playground" trend hits New York City.
The secretary of state says two initiatives to crack down on fracking didn't get enough signatures to make the ballot. Activists disagree.
But it'll still be an uphill climb.
The governor is ordering electric utilities to cut their greenhouse gas emissions.