The center's next event, part of its summer lecture series on energy, will feature Greg Franta, principal architect and team leader of the Rocky Mountain Institute/ENSAR Built Environment Team.

Franta will speak on "Green Building Practices" in the Chautauqua Community House at 7:30 p.m. Admission is $3 for the general public and $1 for Colorado Chautauqua Association members.

Franta will present slides from around the world illustrating strategies for sustainability in site development, water quality and energy efficiency. An internationally renowned architect who is equally well known for his entertaining lectures, Franta also will discuss resource efficiency, environmentally friendly building materials and indoor environmental quality.