Carl Wilhelm Scheele

Carl (or Karl) Wilhelm Scheele, (December 9,1742 - May 21, 1786) a Swedish chemist, born in Stralsund, Pomerania, Germany, was the discoverer of many chemical substances, most notably discovering oxygen before Joseph Priestley.

Scheele worked as a pharmacist in Stockholm, from 1770 to 1775 in Uppsala, and later in Köping. His studies led him to the discovery of oxygen and nitrogen in 1772-1773, which he published in his only book, Chemische Abhandlung von der Luft und dem Feuer (Chemical Treatise on Air and Fire) in 1777, losing some fame to Joseph Priestley, who independently discovered oxygen in 1774.

Scheele also discovered other chemical elements such as barium (1774), chlorine (1774), manganese (1774), molybdenum (1778), and tungsten (1781), as well as several chemical compounds, including citric acid, glycerol, hydrogen cyanide (also known as prussic acid), hydrogen fluoride, and hydrogen sulphide. In addition, he discovered a process similar to pasteurization.

Like many other chemists of his time, Scheele often worked under difficult and even dangerous conditions, which might explain his early death.



In the News

[Scary] Pregnant woman says 'maternal instinct' helped her kill attack
FORT MITCHELL, Ky. - A pregnant woman who killed her attacker said a maternal instinct helped her fight off the woman who investigators believe was after her unborn child."I do believe that I fought harder because it was for my child,"Sarah Brady told ABC's "Good Morning America"in interviews aired Sunday and Monday. "It is a maternal instinct to protect your child to the very end."Katherine Smith, 22, died Thursday after luring Brady to her apartment to pick up a package supposedlydelivered to the wrong address. When Smith pulled out a knife and attacked the pregnant woman, Brady fought back, striking Smith on the head with an ash tray and stabbing her three times with her own knife, police said. Brady, 26, said she didn't know Smith before the two met at Smith's apartment and can't be certain why Smith wanted to kill her."I really am not sure what was going through her mind,"Brady told ABC. "The only thing I thought was that she was going to kill me and my child and that is the only thing that ran through my mind."

The Role of the Wildlife Rehabilitator in Disaster Preparedness and Re
This paper explores how government and private agencies help animals after a disaster, the problems wildlife can pose for disaster and relief workers, how disasters affect wild animals and what behavior can result, how wildlife rehabilitators fit "into the capture, medical care and temporary sheltering of wildlife,"and how to help the public avoid injury from and provide assistance to wild animals. From the disaster manager for the Humane Society of the United States (HSUS).

US Climate Change Science Program Making Good Progress, National Acade
Climate change research directed by the federal government has made good progress in documenting and understanding temperature trends and related environmental changes on a global scale, says a new report from the National Research Council. The ability to predict future climate changes also has improved, but efforts to understand the impact of such changes on society and analyze mitigation and adaptation strategies are still relatively immature, added the committee that wrote the report.

Estrogen Linked To Breast Cancer
The female sex hormone estrogen turns on a gene linked to breast cancer, according to new research. The scientists believe their finding will help explain the link between breast cancer and high levels of estrogen.

Keeping Cancer In Check
Researchers atthe University of Pennsylvania School of Medicine have identified in normal cells that a common metabolic enzyme, which acts as a rheostat of cellular conditions, also controls cell replication. This control is managed through p53, the much-studied protein implicated in many types of cancer. The discovery of the interaction between these two molecules may lead to new ways to fight cancer.

[Funny] A referee has sent himself off in an English amateur league ma
Andy Wain had to abandon the Sunday league match between Peterborough North End and a Royal Mail side in the 63rd minute after throwing down his whistle and marching up to confront North End's keeper.

Open Access Overview
"This is an introduction to open access (OA)."OA "literature is digital, online, free of charge, and free of most copyright and licensing restrictions. OA removes price barriers (subscriptions, licensing fees, pay-per-view fees) and permission barriers (most copyright and licensing restrictions)."Also includes a timeline, links to a blog and a newsletter, and links to related information. From a former professor of philosophy at Earlham College in Richmond, Indiana.

Bungled Insulin Production May Be A Culprit In Diabetes, University Of
Like pieces of origami that get mangled during folding, some insulin molecules get produced in bungled forms -- as well as the correct form -- inside the cells of the pancreas, new research shows.

Ibogaine gaining on alcohol addiction
Alcohol abuse might be quenched by a chemical extract of a West African shrub, which affects brain proteins.

Unlocking The Secrets Of Ripening For Better Tasting Fruits And Veggie
Researchers worldwide are learning to control the key chemical processes involved in ripening, a development that will lead to longer lasting, better tasting tomatoes, apples, and other fruits and vegetables, according to a new article.


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