Shar McBee

Motivational speaker and author of "To Lead is to Serve"

When you volunteer with children, you never know what to expect. Lester Strong, CEO of Experience Corps, is a shining example.

Michelle Nunn

CEO, Points of Light; author, 'Be the Change'

Last week, as a student at Montclair Elementary in Charlotte watched 200 volunteers painting, building and landscaping at his school, he said just one word: "Awesome." I couldn't agree more.

Sandra Larriva

Multimedia journalist

At first, your eyes wander near and far in an attempt to take in the enormity of the creature. Then, a voice in your head screams, having realized that you're in the presence of the largest animal that's ever lived.

Brad Friedman and Desi Doyen

Co-hosts of the radio's nationally syndicated 'Green News Report'

TWITTER: @GreenNewsReport FACEBOOK: Green News Report The 'GNR' is also now available on your cell phone via ...

Brad Friedman and Desi Doyen

Co-hosts of the radio's nationally syndicated 'Green News Report'

TWITTER: @GreenNewsReport FACEBOOK: Green News Report The 'GNR' is also now available on your cell phone via ...

Megan Pincus Kajitani

Writer, educator and founder, Giraffe Revolution

Many marine scientists believe that, at the rate we're going, the seas will be barren by 2048. (Did you get that? No sea life in 35 years!)

Noah Greenwald

Endangered species program director, Center for Biological Diversity

An estimated two million wolves once roamed freely across North America, including most of the United States. But bounties, a federal extermination program and human settlement drove the species to near extinction in most of the lower 48.

Sandra Larriva

Multimedia journalist

Every year, from November to March, dozens of bull sharks approach Mexico's Mayan Riviera to make its temperate and turquoise waters their home.

Brad Friedman and Desi Doyen

Co-hosts of the radio's nationally syndicated 'Green News Report'

TWITTER: @GreenNewsReport FACEBOOK: Green News Report The 'GNR' is also now available on your cell phone via ...

Brad Friedman and Desi Doyen

Co-hosts of the radio's nationally syndicated 'Green News Report'

TWITTER: @GreenNewsReport FACEBOOK: Green News Report The 'GNR' is also now available on your cell phone via ...

Carl Safina

Author and host, 'Saving the Ocean' on PBS

If one third of the delegates vote to reopen the debate, the shark proposal could go belly-up. Why might that happen?

Beth Kobliner

Personal finance journalist; Author, 'Get a Financial Life'

We all know that there-are-kids-starving-in-fill-in-the-blank isn't really effective when trying to get your kids to finish their dinner. Same is true with volunteer work.

Michelle Nunn

CEO, Points of Light; author, 'Be the Change'

By rewarding both good grades and volunteer service, the HOPE scholarship could teach the rest of the nation how to produce educated, engaged citizens who know how to give back.

Anna Clark

Author, "Green, American Style" and Public Voices Fellow at The OpEd Project

As I explained in my op-ed for the Christian Science Monitor, Jordan and I first became concerned about this issue when I came across brutal reports of thousands of lifeless, finless sharks found on the ocean floor off the Colombian coast. What, we wondered, could we in Texas do about this problem?

Michael Kaiser

President, John F. Kennedy Center for the Performing Arts

Just putting on stage a full complement of performances is enough to tax us. And mid-season is when we (should) acknowledge where we are falling short in terms of financial performance.

Shaye Wolf

Climate science director, Center for Biological Diversity

What if your doctor diagnosed your grave sickness but then refused you medicine? That's basically what's happening to wildlife threatened by climate change.