August 2010

What Chemicals are in Your Medicine Cabinet?

The main reason I stopped wearing makeup was that I was concerned about its safety, as well as its impact on the environment and animals. I used to have a blast dollying up my face with all the colors of the rainbow, some glitter, and even drawing on stuff like spider webs with eyeliner. (Scoff if you will; it’s a heckuva lot of fun.)

We don’t usually think of our makeup being harmful for us, of course. We’re bombarded with ads that tell us that this foundation makes us look youthful and healthy, and that mascara makes our lashes look longer—so it must be good for us! In truth, of course, there are many ingredients and cancer-causing chemicals in what we put on and into our bodies. Most of these aren’t regulated, either.

Are Invisiblity Cloaks Even Possible?


When browsing through the shelves of a delightful bookstore near my home, I saw a book that was devoted to the science of “Harry Potter”- I’ve seen books on the science of Star Trek, but never Harry Potter, so it was unusual for me to find Michio Kaku’s article,  "Small-Scale Invisibility Cloaks".


The whole article sounds like crazy-talk, but is actually true. In 2006, some industrious scientists at Duke University created metamaterials, “which could render an object invisible by absorbing all the light that hits it, but only in two dimensions and only at microwave frequencies”.

Now, very small three-dimensional objects can appear to disappear when under an infrared light if they are placed under an invisibility carpet. According to Kaku, when you put the object underneath the carpet, the bump disappears. He believes that this technology can be applied to larger objects or people as well in the future, which is definitely starting to sound more than a little like Harry Potter. The main reason that the technology is able to work is that infra-red light works at a lower frequency than regular light and has a longer wavelength; when light hits the bump, it bounces off.