Mary Poulton, head of the UA mining and geological engineering department, and director of the UA's Lowell Institute for Mineral Resources, discusses the impact of China's economic growth on global resources at a meeting of Women Impacting Tucson, from 11:20 a.m. to 1 p.m., Monday, May 6; $30, $25 with RSVP by Thursday, May 2. Call 323-3100 to RSVP.