E1 - The Racial Wealth Gap

Aired: May 23, 2018

Cory Booker and others discuss how slavery, housing discrimination and centuries of inequality have compounded to create a racial wealth gap.

E2 - Designer DNA

Aired: May 23, 2018

Scientific feat or terrifying social experiment? Specialists in the field discuss the high stakes and ethical controversies of gene editing.

E3 - Monogamy

Aired: May 23, 2018

What do biology, human history and the promiscuity of bonobos reveal about monogamy? Experts and everyday couples weigh in on shifting cultural norms.

E4 - K-Pop

Aired: May 30, 2018

Elaborate music videos, adoring fans, killer choreography. Learn about the global music phenomenon from South Korea that goes beyond "Gangnam Style."

E5 - Cryptocurrency

Aired: June 06, 2018

Cryptocurrency has made people billionaires, but is digital cash the next revolution? Learn about this anonymous currency and how it's coveted.

E6 - Why Diets Fail

Aired: June 13, 2018

Atkins. Paleo. Keto. Do any work in the long term? Experts look at marketing, food environments and genes to explain why diets are often unsuccessful.

E7 - The Stock Market

Aired: June 20, 2018

Does the stock market accurately reflect the status of the economy? Finance specialists discuss market history, valuations and CEO incentives.

E8 - eSports

Aired: June 27, 2018

Is fake violence a sport? Fans, shoutcasters, and eSports icons break down today's video games and the explosive popularity of competitive gaming.

E9 - Extraterrestrial Life

Aired: July 04, 2018

Despite decades of searching, we have yet to discover extraterrestrial life. Scientists discuss the reasons, including: Are aliens just too snobby?

E10 - !

Aired: July 11, 2018

Do we overuse exclamation points!? Linguists and copy editors look at how the punctuation has adapted across history, literature and internet-speak.

E11 - Cricket

Aired: July 18, 2018

Cricket experts look at how the confusing sport became so popular and discuss its evolution in becoming more accessible entertaining and profitable.

E12 - Weed

Aired: July 25, 2018

Marijuana experts discuss the rise of potent "sexually frustrated" cannabis plants, the quests for consistency in weed strains and the history of hemp.

E13 - Tattoo

Aired: August 01, 2018

They've been used to command respect, punish criminals and mark achievements. Tattooists speak about the origins of tattoo traditions and rituals.

E14 - Astrology

Aired: August 08, 2018

Do zodiac signs prescribe your fate? Or do horoscopes' accuracy lie in the placebo effect? Take a look at the science, history and lure of astrology.

E15 - Can We Live Forever ?

Aired: August 15, 2018

Can we uncover the secrets to extending the human lifespan? Experts discuss how developments in science -- even the French lilac -- hold some clues.

E16 - The Female Orgasm

Aired: August 22, 2018

The female orgasm is more elusive when a man is involved. Discover the reasons why and how women are embracing hands on solutions.

E17 - Political Correctness

Aired: August 29, 2018

Political correctness can sometimes feel like a tug-of-war between inclusivity and free speech. Experts discuss the concepts behind the fraught term.

E18 - Why Women Are Paid Less

Aired: September 05, 2018

Hillary Clinton and Anne-Marie Slaughter discuss the cultural norms at the center of the worldwide gender pay gap, including the "motherhood penalty."

E19 - The World's Water Crisis

Aired: September 12, 2018

The global water crisis is at an inflection point. How do we price our most valuable resource, while also ensuring access to it as a human right?

E20 - Music

Aired: September 19, 2018

When does sound become music? Why are humans so uniquely able to master musicality? Researchers talk rhythm, octaves and the magic of song and dance.