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This article mentions “ferricyanide, an electron-hungry molecule.” This puzzled me no end. Aren’t ferricyanide molecules, unlike their ions, electrically neutral? I’m trying to visualize ravenous molecules gobbling up innocent electrons. Ernest NussbaumBethesda, Md. Ferricyanide is indeed an ion, with a negative charge of –3. It’s electron hungry because, counterintuitively, it draws an electron from the […]
- Materials Science
Sweet Glow: Nanotube sensor brightens path to glucose detection
An implantable glucose sensor based on carbon nanotubes could allow patients with diabetes to monitor their blood sugar levels without the need for daily pinprick tests.
- Health & Medicine
Male contraceptive shows promise in monkeys
A shot that primes the immune system against a sperm protein might be the next male contraceptive.
