Find out how desert organisms avoid typically high, frequently lethal, daytime temperatures by adapting to a nocturnal way of life. The hike is easy. Be sure to wear sturdy hiking shoes, bring flashlights (preferably 1 white and 1 UV) and a camera. Meet at the Tom Mays Unit of the Franklin Mountains State Park. There is a $2 park fee or use your Park Pass. For more information, contact Dr. Paul Hyder, 915-244-5322, phyder@zianet.com.