The Christa McAuliffe Center at Framingham State University will present a free webinar, Global Warming Demystified, on April 22 at 5:30PM as the keynote of Science on State Street — Planet Earth Edition. It’s aimed at high-school students and older, but all ages are welcome. Dr. Jeffrey Bennett will speak about the science behind global warming and explain solutions that people of all political views can agree upon. His talk is based on his book, Global Warming Primer. Register here.