In just one year, you can attend the largest celebration of STEM for FREE! On April 16-17, 2016, the 4th USA Science & Engineering Festival returns to the nation's capital along with some of your favorite performers and hands-on exhibits! Next April, Sneak Peek Friday, open to schools, homeschoolers and military families, returns on April 15th and the 2016 X-STEM Symposium kicks off the celebration on April 14th! Read more here.