Nature

IOBY

BY THE NUMBERS: IOBY (In Our Back Yards) has raised more than $130,000 for 100 neighborhood environmental projects in New York since 2009.WHO...

Climate Counts

BY THE NUMBERS: 150 major companies, from Disney to General Electric, are rated annually on their climate practicesWHO'S IN CHARGE: Mike Bellamente, 35, who led a team from the U.S....

Water for People

BY THE NUMBERS: The group helped more than 188,000 people gain access to clean water in 2010.WHO'S IN CHARGE: Ned ­Breslin, 46, formerly a Mozam­bique country representative for...

World Bicycle Relief

BY THE NUMBERS: More than 88,000 bikes distributed and sold in developing nations since 2005WHO'S IN CHARGE: F. K. Day, 51, executive vice president of SRAM Corporation, the largest...

American Forests

BY THE NUMBERS: Nearly 40 million trees planted in the past 21 yearsWHO'S IN CHARGE: Scott Steen, 47, former executive ­director of the American Ceramic Society, an organization for...

African Wildlife Foundation

BY THE NUMBERS: Currently backing 31 conservation-oriented projects that generate more than $2 million annually for African communities; spent $19 million on programs in 2010WHO'S IN...

Big City Mountaineers

BY THE NUMBERS: More than 15,000 urban teenagers have taken part in sponsored outdoor trips since 1989.WHO'S IN CHARGE: Executive director Lisa Mattis, 41, former director of individual...

1% for the Planet

BY THE NUMBERS: In 2010, 1,450 companies donated $22 million to environmental organizations through 1%.WHO’S IN CHARGE: Terry Kellogg, 39, a Yale-trained MBA who was the first...

Kiva

BY THE NUMBERS: Since 2005, more than 628,000 ­citizen lenders have provided $248 million in microloans to small entrepreneurs in developing countries WHO'S IN CHARGE: Matt Flannery,...

David Belt

In July 2009, in a blighted junkyard along the borough’s Gowanus Canal, a tree grew in Brooklyn—actually, a tree, a bocce court, lounge chairs, and three swimming pools made from...

American Trails

BY THE NUMBERS: The world’s largest advocacy group for planning, building, and managing trails and greenwaysWHO'S IN CHARGE: Pam Gluck, 54, former state trails ­coordinator for...

The Marine Mammal Center

BY THE NUMBERS: 30,000 people schooled in marine-science programs each year; approximately 17,000 marine mammals rescued since its inceptionWHO'S IN CHARGE: Executive director Jeffrey R....

Amy Purdy

Purdy is one of the country’s most effective advocates for disabled outdoor athletes, and she came to her work the hard way: by losing both legs below the knees when she was 19. In the...

World Wildlife Fund

BY THE NUMBERS: More than $1 billion invested in roughly 12,000 projects in 100 countries since 1985 WHO'S IN CHARGE: Carter Roberts, 51, a Harvard MBA who spent 15 years leading domestic,...

Vital Voices Global Partnership

BY THE NUMBERS: 10,000 emerging women leaders trained in 127 countries since 1997 WHO'S IN CHARGE: Alyse Nelson, 37, former deputy ­director of the Vital Voices Global Democracy...

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