Newton's Dark Secrets
- Articles on aspects of Newton life and legacy, including his main discoveries, his studies in alchemy and the writing of the Principia.
- http://www.pbs.org/wgbh/nova/newton/

Newton's Castle
- Learn about his discoveries and secret life, color, illusions, and observations from nature.
- http://www.tqnyc.org/NYC051308/

Encarta: Newton, Sir Isaac
- Article provides a summary of Newton's life, education, and accomplishments. Includes a look at his impact on science.
- http://encarta.msn.com/encyclopedia_761573959/Newton_Sir_Isaac.html

Starchild: Sir Isaac Newton
- Short profile, trivia and sketch.
- http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/newton.html

Sir Isaac Newton
- A short biography of Sir Isaac Newton along with links to other related subjects.
- http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Newton.html

BBC Online: Sir Isaac Newton
- Detailed biography includes a look at Newton's early years and his developing interest in science.
- http://www.bbc.co.uk/history/historic_figures/newton_isaac.shtml

Windows to the Universe: Isaac Newton
- Three short biographies for beginning, intermediate and advanced readers.
- http://www.windows.ucar.edu/cgi-bin/tour.cgi?link=/people/enlightenment/newton.html&frp=/windows3.html&fr=f&sw=false&edu=mid&art=ok&cdp=/windows3.html&cd=false

Sir Isaac Newton: English Scientist and Mathematician
- Short biography and portrait along with related links.
- http://www.lucidcafe.com/library/95dec/newton.html

Isaac Newton (1642 - 1727)
- Detailed biography reproduced from a 1908 history of mathematics.
- http://www.maths.tcd.ie/pub/HistMath/People/Newton/RouseBall/RB_Newton.html

Isaac Newton
- Short biography and sketch from PBS.
- http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_newt.html

Sir Isaac Newton: The Universal Law of Gravitation
- Provides a simple introduction to the law for which Newton is best known.
- http://csep10.phys.utk.edu/astr161/lect/history/newtongrav.html