Watch a free screening of“Extreme Ice,” a documentary that profiles photographer James Balog, who captured global warming with time-lapse photography. Hosted by the Green Sanctuary Team and the Sierra Club. http://extremeicesurvey.org. Contact: [email protected]. 817-451-1505.

This documentary film by Ben Evans and Mark Dixon follows three young friends as they take a year-long environmental road trip across all 50 United States, tackling peak oil, eco-vehicles, sustainable farming, wind energy, piles of garbage and a category they call, simply, “the weird.” Part of SMU's Sustainability Film Festival. Free. 214-768-7654. [email protected]. www.yert.com

Producer, writer, director Rob Tranchin will introduce and discuss his film, “Living With the Trinity,” as part of SMU’s Sustainability Film Festival. Free. 214-768-7654. [email protected]. TrinityRiverTexas.org.

National Geographic photographer Tim Laman and Cornell University ornithologist Ed Sholes present photographs, video and stories tied to their forthcoming book "Birds of Paradise Revealed." Tickets $25-$50.

The Dallas Film Society presents this love story about two mushroom foragers in New York. Synopsis and trailer at http://nowforager.com/the-film/

One of the largest Earth Day celebrations in the U.S., this annual free two-day festival showcases green vendors and organizations. Hours from 10 am to 6 pm. Parking is $10.

Screening is hosted by the Green Sanctuary Committee at Westside UU. "Last Call at the Oasis" sheds light on the vital role water plays in our lives, exposes the defects in the current system and introduces those who are championing new solutions. Popcorn provided. Free. For more information, email Linda at [email protected]. http://www.lastcallattheoasis.com/

The Greater Fort Worth Sierra Club is hosting this screening of the documentary "Beyond Pollution," an examination of the environmental, economic and humanitarian impacts of the BP oil spill in the Gulf of Mexico. Producer Harper Robinson will be on hand for a Q&A session following. http://www.beyondpollutionthefilm.com/

Green Movie Night: The film takes the viewer on a journey through the catastrophic disappearance of bees.

Dallas Interfaith Power & Light will be hosting a screening and round-table discussion of the Nova documentary Power Surge. This film looks at the state of "green energy" in the United States and the potential impact of technology on softening the blow of global climate change. In addition, participants of this new faith-based initiative will be presented with an opportunity to comment on the draft mission and principles.