Crash Course
Biological Diversity, Butts, and the Tree of Life: Crash Course Biology #18
Everywhere you look on Earth, you’ll find wonderful and diverse living things, from tiny tardigrades to soaring sequoias. And incredibly, everything alive today, and everything that’s ever lived, is related. In this episode of Crash...
Crash Course
Population Genetics: Why do we have different skin colors?: Crash Course Biology #14
In this episode of Crash Course Biology, we’ll learn about the ways population genetics reveals how groups of living things evolve—by comparing genetic similarities and differences. We’ll discover the most genetically diverse species of...
Crash Course
Intro to Evolution: What We Can Learn From a Giraffe's Neck: Crash Course Biology #11
From a single-celled common ancestor, evolution has brought us all of Life’s Greatest Hits — including butterflies, beetles, bacteria, and human beings. In this episode of Crash Course Biology, we’ll learn how evolution explains life’s...
Crash Course
Phylogeny: How We're All Related: Crash Course Biology #17
Crocodiles, and birds, and dinosaurs—oh my! While classifying organisms is nothing new, phylogeny— or, grouping organisms by their evolutionary relationships—is helping us see life in a whole new light. In this episode of Crash Course...
Crash Course
Evolutionary History: The Timeline of Life: Crash Course Biology #16
Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing...
Crash Course
Speciation: Where Do Species Come From?: Crash Course Biology #15
How can you tell two species apart? It’s not always simple. In this episode of Crash Course Biology, we’ll learn about speciation—a process that can happen over millions of years, or within a single generation. Along the way, we’ll...
Crash Course
Natural Selection: Life's Way of Stayin' Alive: Crash Course Biology #13
There are lots of ways that evolution happens, and natural selection is just one of them. In this episode of Crash Course Biology, we’ll find out how this process works and shapes traits in all living things —from ginkgo trees to howler...
Crash Course
Microevolution: What's An Allele Got to Do With It?: Crash Course Biology #12
Whether we’re talking about tigers, trees, or tarantulas, evolution happens at the level of the population. In this episode of Crash Course Biology, we’ll find out how natural selection, gene flow, genetic drift, and other processes...
Crash Course
The Effects of Climate Change: Crash Course Biology #9
Climate change shakes up all of Earth’s systems, including the living ones. In this episode of Crash Course Biology, we’ll see how climate change’s effects rattle the entire chain of life. Changes felt in one population ripple out to...
Crash Course
What is Climate Change?: Crash Course Biology #8
Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing like the climate change we’re experiencing now. In this episode of Crash Course Biology, we’ll talk about the greenhouse effect, learn why...
Crash Course
Bioinformatics: How Data Saves Lives: Crash Course Biology #40
On its own, a huge DNA sequence is a meaningless pile of data — so, how do biologists figure out what it means? They turn to the power of bioinformatics! In this episode, we’ll learn what bioinformatics is, how it works, and how...
Crash Course
DNA Structure & Replication: Our Instruction Manual for Existing: Crash Course Biology #33
Your DNA contains all the instructions your body needs to function. In this episode of Crash Course Biology, we’ll figure out what this giant instruction manual looks like and how this three-billion-letter code gets copied into your...
PBS
How USAID cuts are impacting the fight against HIV in Kenya
The Trump administration's cuts to the U.S. Agency for International Development have had reverberations around the world. The agency, which operated in over 100 nations and employed thousands of people, has been virtually eliminated. In...
PBS
How AI may be robbing new college graduates of traditional entry-level jobs
The college class of 2025 is entering one of the most challenging job markets in years, with the unemployment rate the first three months for recent graduates jumping to 5.8%. One challenge they're facing is artificial intelligence,...
PBS
Global celebration of LGBTQ+ community draws thousands to nation’s capital
LGBTQ+ people from around the globe gathered in Washington, D.C. Saturday to celebrate Pride Month and protest the Trump administration’s recent targeting of their community. A rally will take place Sunday against health research funding...
PBS
Ohio students face changes on campus as new state law rolls back diversity initiatives
Since taking office in January, the Trump administration has targeted diversity, equity and inclusion efforts nationwide, including on college campuses. In Ohio, a new state law is also challenging DEI programs, leaving students and...
PBS
California’s homeless encampment crackdown draws criticism from health experts
California is home to the nation’s largest homeless population. Gov. Gavin Newsom, whose administration has spent more than $20 billion on the issue, recently urged cities and counties to pass laws that effectively ban “dangerous and...
PBS
Agencies accused of rushing adoptions before mothers can change their minds
As more states limit or ban access to abortion, some are beginning to push adoption as an alternative for women facing unplanned pregnancies. But when do laws go from accommodating to exploitative? From the Center for Investigative...
PBS
Program helps bridge political divides by connecting people through personal stories
As the political parties square off over numerous issues, many Americans are seeking ways to overcome division and distrust within their communities to address the issues that matter most to them. A program in Rhode Island is trying to...
PBS
Projects bringing water to drought-ridden land could end with USAID’s dismantling
As the Trump administration ends USAID's mission, a project to bring water to drought-ridden lands is now in peril. In partnership with the Pulitzer Center, William Brangham and producer Molly Knight Raskin traveled to a community in...
TED Talks
You are the bridge to the next generation | Ndinini Kimesera Sikar
Do you know what you want to preserve for the next generation? asks community leader Ndinini Kimesera Sikar. Drawing on her experience growing up in a family of 38 in a traditional Maasai village in Tanzania — where every chore was...
TED Talks
The poetry of family | Duncan Keegan
Duncan Keegan doesn't consider himself a poet, but this deeply beautiful talk shows otherwise. With simple grace and quiet eloquence, he celebrates family, connection and togetherness, often most called for at the hardest of times.
TED Talks
The mental health AI chatbot made for real life | Alison Darcy
Who do you turn to when panic strikes in the middle of the night — and can AI help? Psychologist Alison Darcy shares the vision behind Woebot, a mental health chatbot designed to support people in tough moments, especially when no one...
TED Talks
A new vision of healthy masculinity | Davonte Green
What does it actually mean to be a "real man" these days? In a personal talk packed with actionable advice, youth advocate Davonte Green challenges age-old stereotypes about masculinity, showing that emotional intelligence and...