This enlightening series digs into a wide range of topics such as the rise of cryptocurrency, why diets fail, and the wild world of K-pop.

NEW Music 20m 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.

NEW The World's Water Crisis 19m 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?

NEW Why Women Are Paid Less 19m Hillary Clinton and Anne-Marie Slaughter discuss the cultural norms at the center of the worldwide gender pay gap, including the "motherhood penalty."

NEW Political Correctness 18m Political correctness can sometimes feel like a tug-of-war between inclusivity and free speech. Experts discuss the concepts behind the fraught term.

NEW The Female Orgasm 19m The female orgasm is more elusive when a man is involved. Discover the reasons why -- and how women are embracing hands-on solutions.

NEW Can We Live Forever? 18m Can we uncover the secrets to extending the human lifespan? Experts discuss how developments in science -- even the French lilac -- hold some clues.

NEW Astrology 18m 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.

NEW Tattoo 19m They've been used to command respect, punish criminals and mark achievements. Tattooists speak about the origins of tattoo traditions and rituals.

NEW Weed 20m Marijuana experts discuss the rise of potent "sexually frustrated" cannabis plants, the quest for consistency in weed strains and the history of hemp.

NEW Cricket 17m Cricket experts look at how the confusing sport became so popular and discuss its evolution in becoming more accessible, entertaining and profitable.

NEW ! 15m Do we overuse exclamation points!? Linguists and copy editors look at how the punctuation has adapted across history, literature and internet-speak.

NEW Extraterrestrial Life 19m Despite decades of searching, we have yet to discover extraterrestrial life. Scientists discuss the reasons, including: Are aliens just too snobby?

NEW eSports 18m Is fake violence a sport? Fans, shoutcasters and eSports icons break down today's video games and the explosive popularity of competitive gaming.

NEW The Stock Market 18m Does the stock market accurately reflect the status of the economy? Finance specialists discuss market history, valuations and CEO incentives.

NEW Why Diets Fail 15m 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.

NEW Cryptocurrency 14m Cryptocurrency has made people billionaires, but is digital cash the next revolution? Learn about this anonymous currency and why it's so coveted.

NEW K-Pop 20m Elaborate music videos, adoring fans, killer choreography. Learn about the global music phenomenon from South Korea that goes beyond "Gangnam Style."

NEW Monogamy 18m What do biology, human history and the promiscuity of bonobos reveal about monogamy? Experts and everyday couples weigh in on shifting cultural norms.

NEW Designer DNA 18m Scientific feat or terrifying social experiment? Specialists in the field discuss the high stakes and ethical controversies of gene editing.