President Barack Obama hosts the 2014 White House Science Fair

President Barack Obama looks at the First Robot project of Lydia Wolfe (r) and John Moore (c), Chicago, IL, during the 2014 White House Science Fair at the White House, Washington DC, Tuesday May 27, 2014. The Fair celebrates the winners of STEM (science, technology, engineering and math) competitions across the country. UPI/Aude Guerrucci/Pool