Wednesday: Rebecca Skloot, the best-selling author of "The Immortal Life of Henrietta Lacks," speaks at 7 p.m. at Hoyt Sherman Place, 1501 Woodland Ave. The book deals with the HeLa, an "immortal cell line" harvested from cervical cancer patient Henrietta Lacks in 1951. The event is a part of the Des Moines Public Library's AViD Author Series. Free. Go to dmpl.org.
Friday: The Science Center of Iowa, 401 W. Martin Luther King Jr. Parkway, hosts its monthly Mixology Night from 5:30-9 p.m. The theme is "Science of Light," with demonstrations and interactive components, along with live music by Dan Tedesco. $5. Go to sciowa.org.
Friday-Saturday: Improv comedy troupe Comedy XPeriment performs "April Showers, Improv Flowers" shows at 7:30 p.m. Friday and 9 p.m. Saturday in the Civic Center's Stoner Theater, 221 Walnut St. Comedy XPeriment mixes short form improv skits with longer pieces using suggestions from the audience. $10. Go to desmoinesperformingarts.org.
Saturday: The Iowa Energy closes out the season with two games this week at Wells Fargo Arena, 730 Third St. The team takes on the Westchester Nicks at 7 p.m. Wednesday and the Maine Red Claws at 7 p.m. Saturday. There will be a bobblehead giveaway at Saturday's game. $8-$50. Go to iowaenergy.com.