Cakes, wizards and stiltwalkers are appearing at the Science Museum of Minnesota today. The Museum marks it's 90th Birthday...and to celebrate the Museum is throwing a party and offering FREE admission today. Over 800-thousand people visit the museum annually---and it's also the number one destination for school field trips. The Museum's Director of Marketing and Communication--Jane Eastwood--says many things have changed over the past 90 years...but the focus has remained the same.