Rank #1: Ep. 2: Where did the word 'dude' come from?
A massive, decade-long "dude" research project has finally yielded convincing results
Rank #2: Ep. 3: How The Star-Spangled Banner went from battle poem to sporting-event mainstay
Trapped on a boat during the War of 1812, lawyer Francis Scott Key was inspired to write a poem...
Rank #3: Ep. 53: China's plan to run the world
Rank #4: Ep. 50: How impeachment works
With scandals swirling around the White House, the "I-word" is already being mentioned in Congress. But what's the origin of the process and how exactly is it used today? Here's everything you need to know.
Rank #5: Ep. 62: Multivitamins are useless. Here's why.
Rank #6: Ep. 54: Our irrational fear of flying
You're more likely to die from a lightning strike than in an airplane crash, and yet we just can't seem to shake our aviophobia.
Rank #7: Ep. 43: How sugar became Public Enemy No. 1
Many experts believe that sweetened foods have caused a global health crisis. What's so bad about sugar?
Rank #8: Ep. 4: Nobody reads party platforms. They're still really important.
Parties still play a vital role in organizing political life and enabling people to understand the choices they have in a representative democracy
Rank #9: Ep. 52: How to revolutionize the tax code with only 'find and replace'
The simplest way to revolutionize the tax code? Just convert deductions to credits.
Rank #10: Ep. 18: Why ObamaCare is struggling
Three years after it became law, the Affordable Care Act is facing a litany of problems. How serious are they? Here's everything you need to know.
Rank #11: Ep. 14: What Disney World's outrageous prices say about our unequal economy
It's a rich man's world after all
Rank #12: 37: The mainstreaming of mindfulness meditation
Stressed-out Americans, from war veterans to Google workers, are embracing mindfulness meditation. Does it really work?
Rank #13: Ep. 20: Hillary Clinton's email scandal, explained
Everything you need to know about the damn emails
Rank #14: Ep. 13: 8 questions employers should never ask job applicants
Believe it or not, job interviews have rules.
Rank #15: Ep. 19: The truth about America's illegal immigrants
Donald Trump has made illegal immigration a major part of his presidential campaign. But America's illegal immigration controversy is a lot more complex than Trump's sound bites and policies. Let's dig into it.
Rank #16: Ep. 35: Life after the White House
Once they've relinquished the highest office in the land, many presidents enjoy rewarding second acts
Rank #17: Ep. 5: 'I know, right?': The anatomy of a wonderfully nonsensical phrase
And why we insist on saying things that make no literal sense
Rank #18: Ep. 72: The strange, circuitous history of Daylight Saving Time
Rank #19: Ep. 38: Why it's difficult to tell a Canadian accent from a Californian one
Not so easy, eh?
Rank #20: Ep. 29: Why extreme weather is the new normal
Massive floods, prolonged heat waves, and destructive storms are becoming more common. Why? Here’s everything you need to know.