CAMBRIDGE, Mass. — A member of a foreign royal family has visited one of the most prestigious universities in the nation.Crown Prince Mohammed bin Salman of Saudi Arabia is touring the U.S. and visited the Massachusetts Institute of Technology on Saturday to promote an academic energy agreement.The second annual "Innovation to Impact Forum" took place in conjunction with bin Salman's visit, and featured exhibits from by MIT-affiliated companies like robotics group Boston Dynamics, and international businesses like oil company Saudi Aramco.