Adventurer Helen Thayer will speak about “Walking the Gobi: a 1,600-mile Trek Across a Desert of Hope and Despair” at 2 p.m. March 21 at the Northshore Senior Center, 10201 E. Riverside Drive, Bothell. Admission is $8/members, $16 nonmembers. For information on Thayer, visit her Web site.

To register for the talk, visit the senior center Web site.