With bittersweet emotion, President Obama attended his sixth and final White House Science Fair on Wednesday, witnessing projects from more than 130 bright students, who presented ideas to save the planet, and treat Ebola, reports NBC News.

New research explains why Black and low-income students lag behind more affluent White peers in science. The researchers recommend early exposure to science.

Scientists said Tuesday that they have narrowed down their search for the so-called God particle, or the Higgs boson, the particle believed to be the basic building block of the universe. SEE ALSO: Could Maya Rudolph’s Movie Nab An Oscar?