WASHINGTON--(BUSINESS WIRE)--The X-STEM: Extreme STEM Symposium—presented by MedImmune, the global biologics research and development arm of AstraZeneca—kicks-off the 4th USA Science & Engineering Festival Expo, hosted by founding and presenting sponsor Lockheed Martin. Being held on April 14th at the Walter E. Washington Convention Center in D.C., X-STEM is a “TED-style” event for kids featuring talks by 40 of the nation’s most noted science, technology, engineering and mathematics (STEM) professionals representing top universities, corporations, non-profits, and governmental agencies.
