MadSci Network

Get answers to all your science questions on the MadSci Network. Their “collective cranium of scientists” at top universities, businesses and government answer students’ questions. You can also browse or search their archive of more than 36,000 questions and answers.

Note that the search-by-subject feature of their archive search is a bit quirky. I was unable to get results by browsing the entire archive under a specific subject. But I was able to get results by selecting specific years and months. The keyword search feature works much better.