Great Lakes Science Center has a new event to lighten up the winter doldrums, just in time to make it through the last stretch of ice and snow in February! Join them over the three-day Presidents Day weekend for a Curiosity Carnival on Saturday, February 17 through Monday, February 19. Guests of all ages will enjoy hands-on activities, amazing science demonstrations and all of the Science Center's interactive exhibits. Gather your team together for a Boat Float Engineering Challenge! Use a variety of materials to design and engineer your own wind-powered boat and then test its buoyancy and let it sail down the course. Race your boat against one built by your family or friends, or try to beat your own time! Ignite your curiosity while exploring stunning science experiments during the Strange Science Big Science Show, learn about the mysteries of matter during the Magic of Matter Demonstration, check out a water workshop or explore the chemistry of color in a BASF Kids' Lab. Learn about Newton's laws of motion during a Magnificent Motion activity and see if you can trick your brain into seeing something that's not there with Incredible Illusions. Presidents Day weekend is also the last chance to experience All Aboard! The Science of Trains before it ends February 19. This latest temporary exhibition allows rail fans of all ages to get a closer look at the world of the railroads through hands-on exhibits and the rail history of Cleveland. There are scale models, a creative play toddler area and ridable train. All Aboard and the train ride are included with general admission.