Sethi co-created, hosted, and oversaw all video and audio content for TreeHugger.com, the largest environmental website on the Internet. Under her management, TreeHugger won the 2006 Vloggie for Best Green Vlog. Lauded in Vanity Fair as the environmental "messenger," Sethi moderated the panel on climate change at the first Clinton Global Initiative University and hosted a forum on global warming with Nobel Laureate Al Gore. She anchored an audio podcast series for Gore's non-profit The Alliance for Climate Protection and is one of the supporters of The Climate Group's Together campaign, aimed at multi-sector solutions to climate change. She has been identified as a Variety magazine Woman of Impact and one of the top Eco-Heroes of the Planet by the UK's Independent.
Sethi has contributed environmental segments to the Oprah Winfrey Show and has been featured on the Ellen DeGeneres Show, Today Show, and Martha Stewart Show, highlighting ways we can become more environmentally friendly. She is the "eco-expert" on the syndicated green home makeover show The EcoZone Project and recent host of Voom HD Network's social and environmental series Keep It Green on Equator HD. Sethi has lectured on corporate social responsibility and sustainability in media at: the Business Alliance for Local Living Economies Conference, the Green Business Conference, the CERES Conference, Cornell University's Johnson School of Business, M.I.T., Smith College, NYU's Stern School of Business, Beth Haverim Temple, Bioneers by the Bay, and the democratic think tank Demos.