Tania Lombrozo

This post was updated on Oct. 17.

The last of three debates between Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump will take place Wednesday night in Las Vegas.

The debates, sponsored by the Commission on Presidential Debates, have the stated mission of offering "the best possible information to viewers and listeners" in the lead-up to the general election.

New research suggests that even college students who overwhelmingly report that they accept interracial relationships show greater activity in the insula — a brain region associated with disgust — when presented with images of black-white interracial couples than when presented with images of same-race couples.

Every semester, college instructors face a choice: whether to restrict the use of laptops and other devices in their classrooms or to, instead, let students decide for themselves.

And for classrooms that do allow devices, students face an ongoing set of choices: to take notes electronically or by hand, to check the textbook or the text message, to check Instagram or Twitter.