In this week’s newsletter, we’re going to talk about chromosomes. While they seem somewhat abstract, these wound up pieces of DNA are very real. It’s just that they’re small so it’s hard to visualize them in every cell. The coolest thing about chromosomes is that if you learn to read them, you could (in theory), make a human. Or a dog. Or a horse. Or any other living thing. They are the instruction manuals that tell enzymes how to make a living organism.
Have you ever wondered why there are so many Greek letters in science, math, and engineering? It turns out that there are multiple reasons why this happened. Throughout human history, we’ve always borrowed and taken things from other cultures and made it our own. You’d be hard pressed to find a society today that isn’t a patchwork quilt of victorious wars and stolen words, foods, and articles of clothing. In this newsletter, we’ll take a look at all the reasons why so many Greek letters hang out in science.
Red blood cells (RBCs) are one of the most recognizable cells in our body. They appear in movies, magazines, and even under the microscope if you keep your wits about you next time you cut yourself. Unlike other cells in your body, RBCs do not contain DNA. Their job, carrying oxygen, is so important that every single square nanometer of the cell is reserved. In this week’s newsletter, we’ll talk about some cool RBC facts and explain their life cycle in the body.
There are some parts of your body that you are acutely aware of. For instance, your eyes or your hands. A small piece of sand scratching your cornea or a papercut on the tip of your finger is so uncomfortable and painful that you just can’t ignore it. But your back is a body part that people tend to take for granted. Sure, it gets sore, but usually after a good night’s sleep, it seems to bounce back. Back pain also develops slowly, there’s no distracting sting; instead, the dull ache tends to come and go, each time returning stronger. Till one day…