Wikimedia
Wikipedia: Absolute Zero
Wikipedia offers several paragraphs of detailed information on absolute zero, the lowest temperature that can be obtained in any macroscopic system.
National High Magnetic Field Laboratory
Magnet Academy: Lev Davidovich Landau
While growing up in the Soviet Union, Lev Landau was so far ahead of his classmates that he was ready to begin college at age 13. His parents noticed a particular gift for math in their young son, who was considered a prodigy. It came as...
Science4Fun
Science4 Fun: Richard Feynman
Brief biographical sketch of scientist Richard Feynman whose contributions include the Manhattan Project, quantum electrodynamics, and superfluidity.