5-Minute Videos | PragerU

Is there an equation that can accurately predict how happy you will be? There is. Can you control the inputs of that equation, and thus your own happiness? You can. How? Dennis Prager, author of the best-selling book, "Happiness is a Serious Problem", explains.

Americans today place enormous pressure on presidents to "do something"...anything, to get the economy going. There was one president, though, Calvin Coolidge, who did "nothing" -- other than shrink government. What happened? America's economy boomed. Is there a lesson to be learned? Award-winning author, historian, and biographer Amity Shlaes thinks so.

When whites riot, the public rightly labels them as criminals. When blacks riot, the public considers them to be protestors with legitimate grievances. Is this different standard fair? Or is it an example of a new form of racism cloaked in low expectations? Chloe Valdary, a black student at the University of New Orleans, explains.

Every year on Earth Day we learn how bad humanity's economic development is for the health of the planet. But maybe this is the wrong message. Maybe we should instead reflect on how human progress, even use of fossil fuels, has made our environment cleaner and healthier. Alex Epstein of the Center for Industrial Progress explains.

Is profit a dirty word? Would the world be better off without them? Or are profits progressive -- the only thing that can move potatoes from Idaho to Manhattan and medicine from America to Africa? Professor and economist Walter Williams explains.

Do humans have free will or are our decisions entirely products of chemistry, physics, and genetics? Is there a difference between the brain and the mind? Could a neuroscientist with enough knowledge of our brains know every decision that we'll make? The answers to these questions cut to the heart of what it means to be human.

America's campuses, particularly those in California, spend tens of millions of dollars on administrators and programs to combat issues like sexism, homophobia, and racism on campus. But are these problems in any way prevalent at our universities? Or is this diversity bureaucracy a big waste of money? Heather Mac Donald of the Manhattan Institute explains.

What was perhaps the most determinative date in American history? July 4, 1776? Pearl Harbor? September 11? How about...July 28, 1588. Richard McMillan, Professor of History at Pierce College, explains why that seemingly random date is so important.

Why did America invade Iraq in 2003? The decision was and still is controversial, but the reason was both clear and compelling.

Men look at pretty women. That goes for men who are married, men who are dating, and men who are single. That's their nature. But is this built-in attraction with the female body a threat to their spouse, girlfriend, or partner?