Iranian researchers from Alzahra University produced an electrochemical DNA biosensor by studying interactions between antimicrobial drug and double stranded DNA on the surface of glassy carbon electrode modified with multi-walled carbon nanotube (MW
With currently available power sources, users have had to choose between power and energy. For applications that need a lot of power, like broadcasting a radio signal over a long distance, capacitors can release energy very quickly but can only store
Ricin is one of the most poisonous substances on Earth, it's scarily easy to make, and somebody is mailing it to the President and at least one U.S. senator. What it is, how it works, and more, inside.
Back in January, the Edison Electric Institute — the (typically stodgy and backward-looking) trade group of U.S. investor-owned utilities — released a report [PDF] that, as far as I can tell, went almost entirely without notice in the press. That’s a
The cause of the explosion is thought to be accidental, but fertilisers, notoriously, can be used in home-made bombs and nitrogen, one of the key elements they contain, is central to TNT and other explosives. New Scientist investigates
Deep brain stimulation is becoming very precise.This technique allows surgeons to place electrodes in almost any area of the brain, and turn them up or down -- like a radio dial or thermostat -- to correct dysfunction.
“[Drones are a] game-changing technology, akin to gunpowder, the steam engine, the atomic bomb—opening up possibilities that were fiction a generation earlier but also opening up perils that were unknown a generation ago.”—Peter Singer,