Biology

Richard Rozmahel passes time by reading the bulletin board hanging above the wheezing printer attached to the DNA sequencer. There’s an advertisement from a company selling genetic research chemicals. They’re offering a free T-shirt sporting the words: Ultra Pure Human Being. At the bottom of the ad he reads, “Send six peel-off seals from any GIBCO BRL Enzymes and receive an I Make My...

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I heard of an experiment that it is impossible to suck a liquid up a straw more than 10 meters. Is this a true experiment?

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In the news

Pushing the limits of chemistry with iridium

October 22, 2014

Canadian scientists working with the element iridium in Gary Schrobilgen's lab at McMaster university set a new record for the highest formal oxidation state in the periodic table of the elements. Oxidation state describes the number of electrons an atom loses or gains when it joins with other atoms in chemical compounds; the higher the oxidation state, the more electrons, critical in many applications, especially batteries. Previously the highest number was 8. Working with Chinese and German colleagues, the scientists created a gaseous form of iridium tetroxide reaching an oxidation state of 9. More at the Science Media Centre...

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