The Jackson Hole Alliance for Responsible Planning and the Northern Rockies Conservation Cooperative will host a conference on preserving biological diversity surrounding Jackson Hole June 3-5. "Sharing the land: Preserving Jackson Whole," at Snow King Resort, features field trips, lectures, roundtable discussions and workshops offered by writers and educators. Speakers include wildlife researchers Tim Clark from Yale University, Dave Mattson from the University of Idaho, and Kate Zimmerman from the Land and Water Fund in Boulder, Colo. The conference costs $15. For more information contact Libby Shepard at the Jackson Hole Alliance For Responsible Planning, 40 E. Simpson St., Jackson, WY 83001 (307/733-9417) or Peyton Curlee at the Northern Rockies Conservation Cooperative (307/733-6856).