When: Sat., Jan. 8, 2 p.m. 2011
Perry Grissom, a fire ecologist, discusses buffelgrass' impact on the Sonoran Desert's plants, animals and people at 2 p.m., Saturday, Jan. 8. Information about recent research into fire behavior in buffelgrass will also be presented. Free with park-use fee of $10 per car; or $5 for bicyclists or pedestrians. Call for more information.