Kenya's minibuses -- known as "matatus" -- offer a convenient, affordable and colorful way for people to get around. But they also pose safety risks and accessibility issues for many of their passengers, especially women. Bringing a...

New Yorker cartoonist Liza Donnelly shares a portfolio of her wise and funny cartoons about modern life -- and talks about how humor can empower women to change the rules.

Why is gender even a thing? To answer that, we’re going back to our three sociological paradigms and how each school of thought approaches gender theory. We’ll look at the structural functionalist view that gender is a way of organizing...

This week, John Green continues to teach you about Margaret Atwood's speculative fiction, The Handmaid's Tale. In this installment, we're looking at Atwood's desire to tell a story from a female point of view, and what exactly it means...

People have suspected that Earth rotates for thousands of years, but how did we first prove it?

When Sue Austin got a power wheelchair, she felt a tremendous sense of freedom -- yet others looked at her as though she had lost something. In her art, she conveys the spirit of wonder she feels wheeling through the world. Includes...

Over the years, people have come up with some truly awful apologies. From classic non-apologies, to evasive excuses, and flimsy corporate promises, it's all too easy to give a bad apology. Good apologies generally share certain elements,...

Early education is critical to children's success -- but millions of kids in the United States still don't have access to programs that prepare them to thrive in kindergarten and beyond. Enter the UPSTART Project, a plan to bring early...

The previous videos in this series:

Chapter 1: Why Relativity is
Hard
Chapter 2: Spacetime
Diagrams
Chapter 3: Lorentz T

ransformations

This video is chapter 4 in my series on special relativity, and it...

Optical illusions are a fun way to play with the way your brain interprets what your eyes see, but if some of them don't work for you, it might be because of where you live.

Chris Kluwe wants to look into the future of sports and think about how technology will help not just players and coaches, but fans. Here the former NFL punter envisions a future in which augmented reality will help people experience...

Psychologist Philip Zimbardo says happiness and success are rooted in a trait most of us disregard: the way we orient toward the past, present and future. He suggests we calibrate our outlook on time as a first step to improving our lives.

This video is about how terrestrial muons are part of our experimental proof of time dilation, length contraction, and special relativity in general.





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