If you’re as fair-skinned as the average northern European, you only need about 20 minutes per day. All you have to show is an area of skin about the size of your face.
Without vitamin D from sunlight exposure, lactose assists with the use of calcium. So, cultures with easy access to leafy greens plus sunlight or fish, calcium is taken care of and milk has no advantage. Cultures without access to leafy greens, sunlight or seafood need dairy either as a source of calcium, lactose, or both. You can read more about it in a previous post.
As you slathered conditioner onto your noggin this morning, you probably weren’t thinking about lab-grown skin coins (if you were, r u ok?). But human skin grown in a lab is a booming business—and how it’s made is a little-known and fascinating story.
Popeye made spinach famous as a muscle-building vegetable. But veggies might someday make you stronger without being eaten—when scientists use them to build a new class of artificial muscles. This week a team in Taiwan unveiled gold-plated onion cells that show promise at expanding, contracting and flexing in different directions just like real muscle tissue.
Muscles can only contract, but they can’t expand (in the active sense). The can get stretched, though (which is a passive process).
As interesting as it is, there’s more pressing issues with artificial limbs. Anchoring to the body, mostly. This is often a site of infection because there’s not a really good way to do it. And there isn’t likely much strength to it – the limb can do lots, but the body has to be able to support/share the load. I anticipate things like these will aid robotics/synthoids/androids.
If you’re afraid of AI, then what do you think about children? Either would supplant you…