Why Are So Many People Nearsighted?

Our bodies need salt and our bodies need water, so why is drinking saltwater not good for you? Learn what salt does in our bodies and why seawater will actually dehydrate you in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/science-vs-myt ... Show More

Tungsten's boiling point is over 10,000 degrees Fahrenheit, and as tungsten carbide, it's one of the hardest materials we know. Learn how it's used for everything from armor-piercing bullets to electron microscopes to ballpoint pens in today's episode of BrainStuff, based on this ... Show More

Without the hippocampus, our brains have serious trouble recalling and recording certain types of long-term memories. Learn how this brain structure works in today's classic episode of BrainStuff, based on this article: https://health.howstuffworks.com/human-body/systems/nervous- ... Show More

Something about modern life is leading to higher rates of nearsightedness across the world. What is it? To buy tickets to our upcoming live show in New York, go to http://vox.com/unexplainablelive For more, go to http://vox.com/unexplainable It’s a great place to view show transc ... Show More

Myopia, or nearsightedness, is on the rise in children as a result of reduced time outside and screen usage. TED Radio Hour host Manoush Zomorodi talks to Maria Liu, an optometrist, about how to slow down this progression and how adults can protect their eyes, too. See pcm.adswiz ... Show More

In part three: host Manoush Zomorodi explores how our tech habits are causing our eyes to change shape—to elongate—which causes nearsightedness. She investigates why rates of myopia among kids are soaring. She speaks with Maria Liu, an optometrist with a quest to slow down the pr ... Show More

As you age, you gradually lose the ability to refocus your eyes -- a phenomenon as old as humanity itself -- leading to a reliance on bifocals, contacts and procedures like LASIK surgery. Electrical engineer Nitish Padmanaban offers a glimpse of cutting-edge tech that's truly a s ... Show More

Eyes are incredible. But sometimes they need a little help to see clearly. Enter: glasses! In this episode, we'll hear how eyes take in light and paint a picture of the world around us. We'll take a peek inside the eye to see why sometimes vision can be blurry and how glasses hel ... Show More

<p>That’s the worry. Even the humble eyeglass industry is dominated by a single firm. </p><p>We look into the global spike in myopia, how the Lemtosh got its name, and what your eye doctor knows that you don’t. (Part two of a <a href="https://freakonomics.com/podcast-tag/the-econ ... Show More

Half of the population experience menopause, but its effects are wide-ranging and poorly understood. In this episode, Michelle Hanratty investigates how menopause can affect the eye — from inflammatory changes, such as blepharitis, to dry eye disease and even an association with ... Show More

Close your eyes and try to imagine an apple. Can you see anything? Aphantasia is the inability to see with your mind’s eye. Since it was discovered, scientists have been asking the question: What is the mind’s eye even for? This is the fifth episode of our six-part series, Making ... Show More