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From the May 12, 1934, issue

William M. Welch and public health, a thymus-gland extract for speeding up growth, and mass-three hydrogen.

Chem Demos

They may not be as dramatic as the real thing, but online video and descriptions of lecture demonstrations involving combustion and other chemical and physical effects still fascinate. The Chemistry Learning Center at the University of Illinois offers tantalizing glimpses of methanol combustion, electrolysis of water, hydrogen ignition, the effect of liquid nitrogen on a […]

19419

This article on the spread of Bt pollen ended with the question, “Is this a big deal or a small effect?” The fact that this phenomenon has gone missing from bioengineering papers for 20 years makes one wonder what else hasn’t appeared.