Colorado's 2001 Nobel laureates, Distinguished Professor Carl Wieman of the University of Colorado at Boulder and Senior Scientist Eric Cornell of the National Institute of Standards and Technology, will give a free public lecture on April 17. The lecture, titled "Making the World's Coldest Stuff: Two Coloradans Tell How They Won the Nobel Prize," will begin at 8 p.m. in Macky Auditorium on the CU-Boulder campus. No tickets or reservations are required.