Urban Sustainability

Oak Cliff Earth Day this Saturday features vendors, artists, speakers, yoga and the Pooch Smooch dog kissing booth. Free.

Class for people interested in starting a local farm in an urban setting. Hosted by Texas A&M AgriLife Extension.For course info, contact: Laura Miller (lmmiller@ag.tamu.edu or 817-884-1945).  For registration or payment info, contact Extension Conference Services (agriliferegister@tamu.edu or 979-845-2604). $35.

Throwing unused or expired medications with regular trash or flushing them down the toilet creates additional hazards. To offer a safe alternative, the Drug Enforcement Administration partners with the city of Arlington to host medication drop off days twice a year. See website for locations.

Meet fellow vegan and veg-friendly folks for a great evening of drinks, fun and discussion on vegan goings-on in the Metroplex.

The Solar Car Challenge is designed to motivate students in science, engineering and alternative energy. Students learn how to design, engineer, build and race roadworthy solar cars. The 2013 event features a cross country trip from Dallas to LA beginning July 23. 

On Sunday and Monday, observe the teams as race judges perform final "scrutineering."

Identify yourself with the guard at the South Gate at the Texas Motor Speedway. The TMS entrance is off of SH 114 just west of I35W. Designated parking areas for guests will be identified in the infield area. 

Expo presented by the city of Bedford featuring vendors and exhibitors from energy-saving retailers and renewable energy providers, along with natural gas and other alternatives. Free. 

Star parties are being held at three locations in Tarrant County to bring attention to light pollution: The Tandy Hills Natural Area in Fort Worth (http://tandyhills.org), the Fort Worth Prairie Park (https://www.facebook.com/savetheprairie) and the Bob Jones Nature Center in Southlake  (http://www.bjnc.org). Participants will observe the sky and upload their observations. The event is part of an international citizen scientist program (GlobeAtNight.org). See GSDFW story: http://greensourcedfw.org/articles/julie-s-green-light-april-8-video-race-goes-green-earth-day-film-bash-regional-star-party

Hosted by the North Texas Electric Auto Association and AutoNation. Organizers are expecting more than 50 Leafs there this year. Leaf owners and nonowners welcome.

Taught by Kim Martin of Barking Cat Farm. Cost $25. Payment in advance required. Sign up at: thehouse@thelifehousetx.com. See website for details.