DOBBS FERRY, New York (CNN)-- Jude Ndambuki teaches high school chemistry, but when he's not in class, you might find him Dumpster diving for discarded computers. For the past eight years, the Kenya ...

It’s rare that an interesting story starts with sitting in a Biology 1B class, but on some occasions, I suppose it happens. While I liked to complain about the lab assignments and midterms, Biology 1B ...