The "greening" of New York City includes the active use of hybrid-electric buses as well as strictly controlling emissions and mandating alternative-fuel taxicabs.

Nothing can illustrate the environmental scourge of plastic bags better than candid pictures.

New York City's Department of Sanitation slogged through a year's worth of city garbage to see exactly what people throw away. The trash study was the only way the department could decipher people's habits and in turn create better recycling programs.

It's official. The question mark has been removed.

Here's a familiar scenario. You go to the grocery store, get your items and, at the checkout counter, a bagger puts your items into several plastic bags.

Sitting in almost 70-degree heat in January a couple weeks ago brings the growing problem of global warming to mind.

The holiday season is over. The most obvious sign is the dried-up, discarded Christmas trees thrown out onto the sidewalk.

There was a scare in the air in New York City on Monday morning. The cause was a so-called mystery odor permeating the air.