Why some greens turn brown in historical paintings

Enticed by the brilliant green hues of copper acetate and copper resinate, some painters in the Renaissance period incorporated these pigments into their masterpieces. However, by the 18th century, most artists had abandoned ...

Cleaning up hydrogen peroxide production

The most common process for making hydrogen peroxide begins with a highly toxic, flammable working solution that is combined with hydrogen, filtered, combined with oxygen, mixed in water, and then concentrated to extremely ...

Methane-producing microorganism makes a meal of iron

A new understanding of how an important methane-producing microorganism creates methane and carbon dioxide could eventually allow researchers to manipulate how much of these important greenhouse gases escape into the atmosphere. ...

Understanding probiotic yeast

Researchers led by Prof. Johan Thevelein (VIB-KU Leuven Center for Microbiology) have discovered that Saccharomyces boulardii, a yeast with probiotic properties, produces uniquely excessive amounts of acetic acid, the main ...

The world's cleanest water droplet

In nature, there is no such thing as a truly clean surface. Contact with normal air is sufficient to coat any material with a thin layer of molecules. This "molecular dirt" can change the properties of the material considerably, ...

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