The Moment I Knew (SUBMIT YOUR VIDEO)

At HuffPost, we're kicking off an exciting new project and we'd love you to participate! It's called "The Moment I Knew," and is a user-submitted video series where readers tell the stories of life-changing moments they have experienced. Each section of HuffPost has chosen a different theme -- whether it was the moment you knew you were in love, the moment you knew your marriage was over, the moment you knew you loved college, or the moment you knew you were broke. You can also tell us about any other life-defining moment you'd like to share. The possibilities are endless!

Here on HuffPost Green we've suggested that you tell us about "The Moment I Knew I Wanted To Protect The Planet." Tell us about a moment that fired you up to reduce your carbon footprint, go green, fight and protect the environment for yourself and future generations.

It's really easy to contribute! You can create your video using YouTube or Vimeo and send the link/URL of the video to themomentiknew@huffingtonpost.com. If you create your video using your laptop or mobile phone and have a video file, please attach the file in an email to themomentiknew@huffingtonpost.com. Your video submission is subject to our User Terms. Please make sure to include your full name with your video submission. Each video should be 30-60 seconds long, and should feature only you, speaking right into the camera telling your story. Please start your story with the words "The moment I knew..."

Also, feel free to share your story in the comments section below, or tweet it to us @HuffPostGreen using the hashtag, #momentiknew.

And be sure to check out and subscribe to "The Moment I Knew" YouTube Channel.

We can't wait to hear from you! And if you have any questions, please email themomentiknew@huffingtonpost.com.