Presented by the Sustainability Forum of the Dallas Institute's Center for the City. Featuring Thomaas Homer-Dixon, energy expert, and Eric Klinenberg, authority on cities, culture and politics. $30/members, $45/nonmembers, $10/teachers. DallasInstitute.org

Fundraiser for Julia Trigg Crawford, a Texas landowner in a legal battle with TransCanada, who intend to run the Keystone Tar Sands pipeline through her family farm. Tickets:$35/online, $40/gate. $5/pasture camping.

Alliance for Clean Texas is organizing this eco-lobby day in Austin. Join environmental, consumer and public health activists from around the state for day of united legislative action. Training will be held March 19 from 6-8 pm at University Presbyterian Church, 2203 San Antonio St, Austin. Sign up on website http://www.acttexas.org/lobby-day-2013-in-austin/.

Volunteers needed the third week of the month [except June, July and August] to replant, transplant, mulch and control weeds at this large urban tree farms. Water, tools provided. Info: Tyler Wright, Urban and Community Forester, Texas Trees Foundation at Tyler@TexasTreesFoundation.org or 214-273-6687.

Green Mountain Energy, who donated BRIT’s rooftop solar panels in 2011, will provide an educational overview of solar energy applications for your home. Learn how uses the sun's energy can offer utility cost savings and help the environment. Pre-registration required.

Introduction to Aquaponics: Learn how to grow natural, organic, chemical-free produce twice as fast and at four times the density without the dirt.

Networking and educational group for advocates and professionals interested in sustainability. The meeting is cancelled for February.

Hosted by Environment Texas. Learn how to pick a campaign strategy, goals, and tactics, and how to recruit and train volunteers. Contact: Jennifer@greencorps.org or 818-203-7625.

Environment Texas is hosting a press conference to promote solar energy development in Texas. Speakers include: Jennifer Rubiello, Environment Texas; Anna Clark, Interfaith Power and Light; Michael Gorton, Principal Solar; Aaron Harville, concerned father with asthmatic family, local musician; and Jim Duncan, North Texas Renewable Energy Incorporated. Check out the solar panels, write a solar valentine, grab a snack. Families and children welcome. Contact: Jennifer@greencorps.org or 818-203-7625.

North Texas Renewable Energy Groups meets monthly. Agenda TBA.