Science  16 Jun 2000:
Vol. 288, Issue 5473, pp. 1927
DOI: 10.1126/science.288.5473.1927b

Molecular explosion. Want to see what testosterone looks like, or the profile of lactose or the drug epinephrine? You can pull up 3D models for over 210,000 biomolecules, catalysts, drugs, toxins, and other molecules at this free company-sponsored site.

Secret code basics. Learn how to make your e-mail snoop-proof and other cryptography tricks at this site offering free access (for educational purposes) to the 1999 Handbook of Applied Cryptography. Its 800 pages cover everything from cryptohistory and public key encryption to digital signatures, patents, and standards.

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