The moon may be 1.3 light-seconds away, but why on earth do we measure distances using time?

In 1830, David Walker sewed a pamphlet into the lining of a coat. The volume was thin enough to be hidden, but its content was far from insubstantial. At the time, many members of the US government considered this pamphlet to be one of...

History of Debt

Book:Saratoga, Turning Point of America’s Revolutionary War

New research suggests that cold weather may actually affect the human body's immune response, making us more susceptible to colds, flus and other upper respiratory infections. Dr. Benjamin Bleier, a sinus specialist at Mass Eye and Ear...

Today we’re going to take a closer look at cities, examine how these large complex structures are organized, and identify patterns and differences in land use around the world. We'll begin with a quick recap of Central Place Theory, then...

Is teleportation possible? Could a baseball transform into something like a radio wave, travel through buildings, bounce around corners, and change back into a baseball? Oddly enough, thanks to quantum mechanics, the answer might...

How does cancer know it's cancer? At Jay Bradner's lab, they found a molecule that might hold the answer, JQ1. But instead of patenting it and reaping the profits (as many other labs have done) -- they published their findings and mailed...

When a freak tornado hit their hometown, sisters Caitria and Morgan O'Neill -- just 20 and 24 at the time -- realized they had to jump in and help. What they learned is: After a natural disaster, there's only a tiny window before the...

Artist-technologist Honor Harger listens to the weird and wonderful noises of stars and planets and pulsars. In her work, she tracks the radio waves emitted by ancient celestial objects and turns them into sound, including "the oldest...

Mapping apps help us find the fastest route to where we’re going. But what if we’d rather wander? Researcher Daniele Quercia demos “happy maps” that take into account not only the route you want to take, but how you want to feel along...

When a kid commits a crime, the uS justice system has a choice: prosecute to the full extent of the law, or take a step back and ask if saddling young people with criminal records is the right thing to do every time. In this searching...

Remember the Ice Bucket Challenge craze this summer? Meet the mom who started it all. When Nancy Frates's son Pete hurt his wrist in a baseball game, he got an unexpected diagnosis: it wasn’t a broken bone, it was ALS, and there is no...

A look back at some of our favorite moments from 2013 of Hank doing the messing up thing.

In 1910, 90% of Black Americans lived in the South. By 1940, around 1.5 million Black Americans had left their homes, and 77% lived in the South. By 1970, 52% of Black Americans remained in the South. People moved away for many reasons,...

Science can help create understanding where there is none, but is it possible to study and understand terrorists if we're too busy doing everything we can to stop it? Terrorism is notoriously difficult to study because governments...

The moon may be 1.3 light-seconds away, but why on earth do we measure distances using time?

Over the last four episodes, we’ve examined some of the stories that make up the idea of a “revolution” in knowledge-making in Europe. But we can’t understand this idea fully, without unpacking another one—the so called Age of...

Work that's dictated by a fixed schedule, place and job description doesn't make sense anymore, says leadership expert Debbie Lovich. In light of the cultural shift towards remote work sparked by the pandemic, Lovich gives three...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences.

"The free, online, mainstream pornography that teenagers are most likely to see is a completely terrible form...

In 1776, American colonists were taxed heavily for importing tea from Britain. The colonists, not fans of "taxation without representation", reacted by dumping tea into the Boston Harbor, a night now known as the Boston Tea Party. Ben...

All over the world, beaches look like paradise—but beneath the sand and surf lurk deadly creatures you’d never expect. From venomous stings to lethal strikes, Mark reveals six killers that can turn a dream vacation into your last. Which...

Watch as Mark counts down the WORST spiders you could be bitten by on Earth! Surprisly, some of the venomous spiders on this list, could easily be in your own home! Watch to find out which ones!

In this video, continue with additional examples of VLSM in action.