How often do you think about the air you're breathing? Probably not enough, says entrepreneur and TED Fellow Romain Lacombe. He introduces Flow: a personal air-quality tracker that fits in your hand and monitors pollution levels in real time. See how this device could help you track and understand pollution street by street, hour by hour -- and empower you to take action to improve your health.

In a story of scientific discovery, chemical biologist David R. Liu shares a breakthrough: his lab's development of base editors that can rewrite DNA. This crucial step in genome editing takes the promise of CRISPR to the next level: if CRISPR proteins are molecular scissors, programmed to cut specific DNA sequences, then base editors are pencils, capable of directly rewriting one DNA letter into another. Learn more about how these molecular machines work -- and their potential to treat or even cure genetic diseases.

The Silent Generation, baby boomers, Generation X, millennials, Gen Z -- we're all in the workforce together. How are our assumptions about each other holding us back from working and communicating better? Social psychologist Leah Georges shows how we're more similar than different and offers helpful tactics for navigating the multigenerational workplace.

You're on an airplane when you feel a sudden jolt. Outside your window nothing seems to be happening, yet the plane continues to rattle you and your fellow passengers as it passes through turbulent air in the atmosphere. What exactly is turbulence, and why does it happen? Tomás Chor dives into one of the prevailing mysteries of physics: the complex phenomenon of turbulence. [Directed by Biljana Labovic, narrated by Addison Anderson].

A rabbit attempts to play a church organ, while a knight fights a giant snail and a naked man blows a trumpet with his rear end. These bizarre images, painted with squirrel-hair brushes on vellum or parchment by monks, nuns and urban craftspeople, populate the margins of the most prized books from the Middle Ages. Michelle Brown explores the rich history and tradition of illuminated manuscripts. [Directed by WOW-HOW Studio, narrated by Adrian Dannatt, music by Jarrett Farkas].

You're lifting weights. The first time feels easy, but each lift takes more and more effort until you can't continue. Inside your arms, the muscles responsible for the lifting have become unable to contract. What's going on? Christian Moro explains how exactly our muscles operate, and what causes them to become fatigued. [Directed by Nichola Latzgo, narrated by Addison Anderson].

In 2012, a team of researchers set a world record, transmitting 1 petabit of data— that's 10,000 hours of high-def video— over a fifty-kilometer cable, in a second. This wasn't just any cable. It was a souped-up version of fiber optics, the hidden network that links our planet and makes the internet possible. What is fiber optics and how does it work? Sajan Saini explores the vital technology. [Directed by Artrake Studio, narrated by Addison Anderson].

Arcane books of forbidden lore, disturbing secrets in the family bloodline, and terrors so unspeakable the very thought of them might drive you mad. These have become standard elements in modern horror stories. But they were largely popularized by a single author: H.P. Lovecraft, whose name has become synonymous with the terror he inspired. Silvia Moreno-García dissects the "Lovecraftian" legacy. [Directed by Globizco Studios, narrated by Christina Greer, music by Manuel Borda]

Here's a shocking statistic: 50 to 80 percent of people in the criminal justice system in the US have had a traumatic brain injury. In the general public, that number is less than five percent. Neuropsychologist Kim Gorgens shares her research into the connection between brain trauma and the behaviors that keep people in the revolving door of criminal justice -- and some ways to make the system more effective and safer for everyone.

You've promised to get your son the cutest creature in creation: the cuddly. It's part of the Wuddly species, cousin to the terrifying duddly and the hideous fuddly. To make one, 100 eggs are placed in an incubator to undergo egg fusion, and the resulting combination will produce either a cuddly, a duddly or a fuddly. Can you make the right combination to get a cuddly? Dan Finkel shows how. [Directed by Artrake Studio, narrated by Addison Anderson].