John and Hank Green

John Green is making his return to "Crash Course." This time, he's going all-in with a 50-minute lecture on tuberculosis.

The best quotes about humanity and curiosity from Hank Green: American YouTuber, science communicator, and New York Times bestselling author

Along with John Green, activists are spreading the word with memes to pressure Danaher to lower the cost of its tuberculosis tests.

“Since the mid-1950s, TB has been curable — yet we still allow TB to kill over 1.6 million people per year.” — John Green

Players of Wordle, Connections, and Spelling Bee may be excited to add another game to their daily roster. But Gubbins isn’t just any word game. With Hank Green’s help, it’s a word game for good. 

Author John Green has been recognized by the Centers for Disease Control as a Tuberculosis Elimination Champion.

John Green's latest movie adaptation tells the story of a teen girl living with OCD. With a May 2 release, fans are starting to see early screenings of the film.

Hank and John’s support came after comedian Erin Hattamer’s call to be more involved and vocal in their support of Palestine.

Hank and John Green started an ethical coffee company to raise money for charity.

YouTuber and author John Green has just announced a major investment in the fight to end tuberculosis in the Philippines.

John Green is a bestselling author, podcaster, avid soccer fan, and popular YouTube creator. In 2014, he was named one of TIME Magazine’s 100 Most Influential People in the World.

John and Hank Green fund their wildly popular and impactful Crash Course videos through an annual fundraiser of collector’s coins.