Video Description
Depression is the leading cause of disability in the world. In the United States, close to 10% of adults struggle with depression. But because it’s a mental illness, it can be a lot harder to understand than, say, high cholesterol. One major source of confusion is the difference between having depression and just feeling depressed. …
Suppose you placed a camera at a fixed position, took a picture of the sky at the same time everyday for an entire year and overlayed all of the photos on top of each other. What would the sun look like in that combined image? A stationary dot? A circular path? Neither. Oddly enough, it …
The Sun’s surprising movement across the sky – Gordon Williamson 더 보기 »
If you ever find yourself gazing at falling snow, why not catch a few snowflakes on your glove and examine their shapes? You might notice that they look symmetrical, and if you look closely, you’ll see they have six sides. You could say a snowflake is simply frozen water, but compare one with an ice …
This is the microraptor, a carnivorous four-winged dinosaur that was almost two-feet long, ate fish, and lived about 120 million years ago. Most of what we know about it comes from fossils that look like this. So, is its coloration here just an artist’s best guess? The answer is no. We know this shimmering black …
How do we know what color dinosaurs were? – Len Bloch 더 보기 »
The Earth intercepts a lot of solar power: 173 thousand terawatts. That’s ten thousand times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? To answer that question, we first need to examine how solar panels convert solar energy to electrical …
So my name is Kakani Katija, and I’m a bioengineer. I study marine organisms in their natural environment. And what I want to point out, and at least you can see this in this visualization, is that the ocean environment is a dynamic place. What you’re seeing are the kinds of currents, as well as …
The surprising (and invisible) signatures of sea creatures – Kakani Katija 더 보기 »
Which of these has the least carbohydrates? This roll of bread? This bowl of rice? Or this can of soda? It’s a trick question. Although they may differ in fats, vitamins, and other nutritional content, when it comes to carbs, they’re pretty much the same. So what exactly does that mean for your diet? First …
How do carbohydrates impact your health? – Richard J. Wood 더 보기 »
This might seem hard to believe, but right now, 300 million women across the planet are experiencing the same thing: a period. The monthly menstrual cycle that leads to the period is a reality most women on Earth will go through in their lives. But why is this cycle so universal? And what makes it …
Statistics are persuasive. So much so that people, organizations, and whole countries base some of their most important decisions on organized data. But there’s a problem with that. Any set of statistics might have something lurking inside it, something that can turn the results completely upside down. For example, imagine you need to choose between …
Where does bread get its fluffiness? Swiss cheese its holes? And what makes vinegar so sour? These foods may taste completely different, but all of these phenomena come from tiny organisms chowing down on sugar and belching up some culinary byproducts. Let’s start with yeast. Yeast are single-celled fungi used to make bread, beer, and …
The beneficial bacteria that make delicious food – Erez Garty 더 보기 »
