SPEARFISH - The Visions of Sustainability speaker series continues Tuesday through Friday at Black Hills State University.

"If we are to live sustainably, we need to know what it would look like," said Andy Johnson, director of the Center for the Advancement of Math and Science Education at BHSU.

Johnson opened the series on Monday with a talk "Why Sustainability? Why Now?"

• Tuesday, 3 p.m. Meier 202: Rosalie Little Thunder on "Lakota Sustainability & Cultural Mapping."
• Wednesday, Sept. 23, at 1 p.m. Jonas 206: Josh Krueger of Hills Horizon will talk about local efforts to improve the sustainability of Spearfish and local communities, including recycling efforts, Market in the Park, the push for a community garden and cob buildings for low-energy use dwellings.
• Thursday, Sept. 24, 11 a.m. Jonas 206: Jerry Wright of Rapid City's municipal recycling facility will talk about connections between recycling and energy conservation.
• Thursday, Sept. 24, 7:30 p.m. Meier 204: Karl Schmidt of South Dakota State University will speak on the Transition Movement, a grass-roots movement that has the goal of shifting what it calls the current unsustainable culture to one that is sustainable. Schmidt has led sustainability-related study trips to Poland and Brazil and has taught environmental history at SDSU.
• Friday, Sept. 25 at 10 a.m. Meier 127: Schmidt will speak about permaculture, which he says draws together landscape and people to provide food, energy, shelter and other needs in sustainable ways.