Dr. Helen Caldicott, Nobel Peace Prize winner and longtime activist who helped start Physicians for Social Responsibility and Ground Zero Center for Nonviolent Action, will speak at an all-day forum and workshop Saturday.

Caldicott's appearance at Temple United Methodist Church in Seattle is part of weekend events scheduled around the one-year anniversary of Japan's Fukushima tsunami and resulting nuclear crisis.

Caldicott will kick off presentations by national and international experts, who will discuss issues such as the chances of an earthquake-tsunami in the Northwest, our level of preparedness for a Fukushima-type disaster, and safety at the Hanford nuclear reservation.

Other participants in the Saturday event include Arnie Gundersen, an international energy adviser, and Robert "Bob" Alvarez, a senior scholar at the Institute for Policy Studies.

Events, free and open to the public, include:

• 7 p.m. Friday: Screening of "Surviving Japan," a documentary about natural and man-made disasters, with filmmaker Q&A.

• 9 a.m. to 3 p.m., Saturday: forum and workshop.

All events take place at Temple United Methodist Church, 1415 N.E. 43rd St ., Seattle, and are sponsored by Washington Physicians for Social Responsibility with co-sponsors. More information: www.psr.org/chapters/washington.