Natural Things Not Found in Nature
I learned today, from reading the article referenced below, that there is a crisis in sunscreens. Some sunscreens don't entirely block all UV, some people don't apply their sunscreen often enough, some sunscreens contain chemicals.
Many of the sunscreens that claim to be "all natural" actually are full of petroleum and many other compounds not found in nature.
[Dr. Sharon Ufberg: "The Sunscreen Scandal: Are We Getting All the Facts?", Huffington Post, 26 June 2010.]
Who would like to be the first to point out to Dr. Ufberg that petroleum is, indeed, "found in nature"? Perhaps she has not been aware of what it is that's been spewing from the uncapped BP well (i.e., from the Earth, widely perceived to be part of nature) into the Gulf of Mexico lately.