NACOGDOCHES, Texas - The "Conservation in a Rapidly Changing World" lecture scheduled for Feb. 4 at the Stephen F. Austin State University Pineywoods Native Plant Center has been canceled. SFA Gardens expects to reschedule the lecture by conservationist Peter Raven at a later date. For information about upcoming programs at SFA Gardens, call (936) 468-1832, email erodewald@sfasu.edu or visit sfagardens.sfasu.edu and click on "events."