Most Recent Episodes
Maudib/Thinkstock How Passports Work

The concept of passports – that people should enjoy protected freedom of movement - is an ancient one. It wasn’t until WWI that they became universal. Learn all about this overlooked, important document.

vocal_fry_660x350 Vocal Fry and Other Speech Trends

You've heard lots of complaints about vocal fry, mostly from older white men. But it's not exclusive to the Kardashians. Learn all about vocal fry, upspeak and other quirky speech trends in today's episode.

suratoho/Thinkstock Please Listen to How Plasma Waste Converters Work

There is a way to not only sustainably get rid our household waste, but also produce enough energy from it to power the process and even create electricity for the grid. The future is here!

Roksana Bashyrova/Thinkstock How Wine Fraud Works

Wine fraud may be a case of rich con artists tricking wealthy people into parting with money, but it's still a crime. Learn all about this weird, widespread practice in today's episode.

decade3d/Thinkstock How Vestigial Organs Work

Darwin asserted that seemingly useless organs and behaviors are left over from our evolutionary history. But as more are found to have a function, the idea has become a flashpoint for the battle between science and religion.

eldridge_600x350 What was the Philadelphia Experiment?

The Philadelphia Experiment is a bad movie from the 1980s, and also the conspiracy theory that refuses to die, despite virtually zero evidence of its occurrence. Learn all about this strange non-event in today's show.

Vladone/Thinkstock How Lobbying Works

Lobbying is an entrenched part of American politics and one that many people think is breaking government. But petitioning the government is protected in the Constitution. How can this system be fixed?

© Brian Cahn/ZUMA Press/Corbis How PEZ Works

PEZ began in Vienna as a mint meant to help people quit smoking. But once American kids got ahold of it, the candy took off and a symbol of childhood – and healthy secondary market among collectors – was born.

Thomas Northcut/Thinkstock Chuck and Josh Make It Through Female Puberty

In part two of the SYSK puberty saga, Josh and Chuck venture into new territory as they explore all of the amazing changes girls face when they come of age.

geothermal_600x350 Geothermal Energy: Earth’s Gift to Mankind

Green energy is good for all, and it doesn't get much greener than using the Earth's own heat to warm your home or office. Learn all about geothermal energy in today's new episode.

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