Some scientific superstars will be headlining online classes offered through edX, the nonprofit that aims to transform education by offering classes online. The lineup of free classes offered by MIT this year includes a biology class taught by Eric Lander, a leader in the human genome project, a class focused on poverty from the economist and MacArthur “genius” Esther Duflo, and electricity and magnetism from legendary physics professor Walter Lewin.

And that is just a taste: Michael Sandel, a government professor at Harvard University, will offer his class on justice, already taken by 15,000 students, to the whole world. There will be a class on the Greek hero from Gregory Nagy, a leading classics professor at Harvard.