Astronomers once gazed at the night sky and charted the stars using their naked eyes. Astrophysicist Emily Levesque describes how generations of telescopes have unlocked the wonders of the universe.
At birth, babies' brains look pretty similar. But by age five, there are acute disparities in development. Through a series of studies, Kimberly Noble has found one major factor is family income.
Teenagers often make risky choices that appear absurd in the eyes of their parents. But neuroscientist Adriana Galván says these decisions are critical for adolescent brain development.
Adults don't generate as many new neurons as children or teenagers, but some growth is still happening. Neuroscientist Sandrine Thuret explains how we can encourage the production of more nerve cells.
We associate menopause with the ovaries, but its symptoms start in the brain. Neuroscientist Lisa Mosconi explains how brain health during menopause affects the rest of the body.
Data, numbers, algorithms are supposed to be neutral ... right? Computer scientist Joy Buolamwini discusses the way biased algorithms can lead to real-world inequality.
Sea level rise will displace millions by 2100 — and the Louisiana bayous, where Colette Pichon Battle lives, may disappear entirely. She describes how we can avert the worst when disaster strikes.
February is Black History Month — a time to remember more than 400 years of Black heritage. To celebrate the achievements of the community, we created a playlist of our favorite conversations.
How can we make amends for the atrocities of slavery and segregation? Historian and preservationist Brent Leggs discusses one step in confronting the past: preserving African American historic sites.
When A.J. Jacobs set out to thank everyone who made his morning cup of coffee, he realized the chain of thank-you's was endless. This hour, Jacobs shares ideas on gratitude — and how to make it count.
This past year has changed how many of us experience time, upending our expectations of how we pass our hours, days, and months. So, we asked you: How has your relationship with time changed?
It's easy to see why sloths have become icons of laziness. But zoologist Lucy Cooke says behind their leisurely pace is a marvelous evolutionary advantage that is the secret to their survival.
Sleep is crucial for our health — and there are alarming consequences when we don't get enough. Matthew Walker explores the many benefits of a full night of sleep, and how to make sleep a priority.
NASA engineer Nagin Cox lives on Earth but works on Mars time, where days are longer and time works differently. Her work with the rovers has entirely changed the way she thinks about time on Earth.
Anyone from anywhere can give a TED Talk. This hour, we're joined by curator Cloe Shasha Brooks, who leads a massive search each year to discover brilliant speakers who often fly under the radar.
