If you're interested in learning more about green topics such as conservation, green technology and social justice, check out "Keep It Green", on Wednesdays, 8 p.m. EST on Equator HD, the first 24/7 hi-definition channel dedicated to global adventure and green living.

The original series returns for a second season with a newly expanded half-hour format and a brand new host: noted green expert (and Green Maven editor) Melissa Mansfield .

Each week, Melissa interviews leaders in their field about important environmental and social issues, shows viewers how simple choices can make a big difference and offers practical advice about sustainability.

Melissa is a green lifestyle expert and activist, with an extensive background in environmental and social justice issues. She lives the green lifestyle, walking or biking to work almost every day. She is a vegetarian and teaches yoga in her spare time.

"I'm really excited about Keep It Green's new season," Melissa says. "We're covering topics ranging from the hottest green car technology to saving humpback whales. The show is all about informing and empowering viewers so they're inspired to take action."

The first episode of KEEP IT GREEN premiered on Wednesday, April 23 at 8pm ET/9pm PT/7C on EQUATOR HD. Weekly guest include leaders from Interface, NOAA's National Marine Sanctuaries, Popular Science, the National Audubon Society, Grameen and Doctors Without Borders.

EQUATOR HD is available nationally on the DISH Network satellite service (Channel 9471) and Cablevision's iO digital cable service (Channel 728). Interview segments and Melissa's blog will also be featured online each week at www.blog.equatorhd.com.