Sierra Club member Elna Otter will discuss global climate change at Mountain Vista Unitarian Universalist Congregation April 27.

Otter's free, two-hour talk will start at 5 p.m. at the church, 3601 W. Cromwell Drive. She will present a slideshow, based on work by former Vice President Al Gore, that explains basic climate change science and provides updates on new developments and solutions.

For more information, contact emilyricketts@msn.com via email.