If having a beautiful lawn means putting up warning signs several times a year to keep children and pets off of it, it's probably a good idea to look into alternatives.

I hate plastic bottles. Just think about it before you buy one. We pay more for a gallon of water than we do for a gallon of gas. I think people will realize that water quality standards in most municipalities are as good or better for the stuff coming out of the tap than bottled water companies. You'll save money and save the environment, too.

My grandfather raised me believing in the power of youth to change the world.

Sumatra has these lush forests and huge, amazing creatures like elephants, orangutans, and tigers. They're disappearing because of industry coming in and cutting down the forests.

The biggest organ in your body is your skin, and it's a permeable membrane. Anything you put on it goes into you. If you can't pronounce most of the words on the back of the bottle, it's probably not good for you.

My greatest hope for a future without another Deepwater Horizon disaster lies in our schools, living rooms and community centers, not in boardrooms, political chambers and big industry. If this happens again, we won't have the luxury of the unknown to shield us from answering 'Why?'

Our oceans are facing innumerable threats - from overfishing and pollution to ocean acidification and invasive species - yet we haven't had a blueprint for its use and development, incredible as that seems.

Fossil fuels and mining is a short-term gambit. If we develop those resources at the expense of the environmental gold mine that is the Great Barrier Reef, we will all lose in the long run.

I travel all over the country speaking to young people, and I am always amazed at how engaged in environmental conservation they are.

Both EarthEcho and Seventh Generation understand that young people have the power to change the world - one home, one school and one community at a time.

Helping people understand the impact of key environmental and human issues worldwide is something that I'm passionate about. CNN's 'Going Green' series of specials are engaging viewers around the world through important messages of conservation and hope.

There's this terrific kid in Maine who saw all the waste generated by straws handed out in restaurants. So he made up these little pop-up cards and asked restaurant owners put them on the tables to explain why straws wouldn't be handed out unless requested. Of course, the restaurant owners couldn't resist a 9-year-old kid, and so it worked.

I went to elementary school in L.A. I was born in L.A. My mother was from Redondo Beach. My father was French. He died six months before I was born, so my mother went home. I was born there. Not the childhood that most people think. Middle-class, raised by my mother. Single mom.

Targeting women is key in developing countries. It allows them to go to school, to say how many children they're going to have, which drives the issue of population and how their children will be educated. Women are the best investments in developing countries.

Ocean acidification is caused by the ocean absorbing excess carbon dioxide from the atmosphere, the same carbon dioxide that is the primary cause of global warming, hence the nickname 'the other carbon problem.' As they do so, the oceans become more acidic with terrible consequences.

When you talk to a Republican, many of them just outright say, 'Yeah. Climate change isn't real,' without assessing the facts, and it's a big problem. It's not a red or blue issue, it's a green issue... Not because of facts or science but because of emotion.

Let's face it. Adventure and exploration are in my blood.

EarthEcho Expeditions represents the culmination of more than a decade of working with educators and youth from around the world. EarthEcho Expeditions uses the thrill of adventure to inspire and empower a new generation of environmental champions.