The Aspen Science Center is presenting two "Science Sundays" on May 3 and 10 at 11 am at Jimmy's restaurant on Mill Street. On May 3, kids can take part in nano-technology exploration with a variety of displays and activities including the always-popular oobleck of Dr. Seuss fame. Topics will include electroplating, electricity conduction, bending light, applications of nano technology and computers and physically altering food at the nano level. On May 10, participants can make a special gift for Mom. Preregistration is requested and donations are suggested for adults and kids. For details, contact Jackie at Jfrancis@aspensciencecenter.org.