Sunday Lectures is a weekly roundup of the Internet’s most interesting educational videos. Get smarter without getting out of bed.

The Dark Energy Camera Shows Us What Dark Matter Looks Like

In this clip from the World Science Festival program “To Infinity and Beyond: The Accelerating Universe,” cosmologist and director of the Dark Energy Survey, Joshua Frieman, tells us how to study dark matter when you can’t see it directly.

Austerity and the Politics of Money

This critical assessment of austerity policies across Europe by Mark Blyth, professor of international political economy at Brown University, can help you make sense of what’s going on in Greece.

How Sharks Have Sex

In honor of #SharkWeek, the good folks at Discovery News tell us everything we ever wanted to know about how our favorite predators get it on.

Should This Lake Exist?

The Salton Sea is in the middle of the California desert, and it appeared there entirely by accident. That didn’t stop locals from trying to turn it into the American version of the French Riviera in the 1960s. This video, from science and engineering presenter Veritasium, tells the fascinating story of this accidental lake.

What Does LSD Do To The Brain?

Here’s a short and sweet primer on acid, its fabled history, and its actual effects on the brain by Greg Foot at BritLab. Just so you know.