Christmas trees: When and how should you throw them out?
By Janine Puhak
O Christmas tree, O Christmas tree how dry are thy branches after awhile.
It wouldn’t be Christmas without a fresh fir, but the day will eventually come when it’s time to kick it to the curb. After gifts are opened and the holidays are celebrated, merrymakers should remove real Christmas trees from inside the home when the evergreen becomes overly dry to the touch, for safety’s sake.
Doug Hundley, a spokesperson for the National Christmas Tree Association, told Fox News that this is generally the best time to dispose of a tree, but he urged homeowners to not just haul it to the trash.
Catalytic activity of individual cobalt oxide nanoparticles determined
Precious metal-free nanoparticles could serve as powerful catalysts in the future, for example for hydrogen production. To optimize them, researchers must be able to analyze the properties of individual particles. A new method for this has been suggested by a team from the Center for Electrochemistry at Ruhr-Universität Bochum (RUB) and the Institute of Inorganic Chemistry at the University of Duisburg-Essen (UDE). The group developed a method using a robotic arm that allows them to select individual particles under an electron microscope and place them on a nanoelectrode for electrochemical analysis. The method is described in the journal Angewandte Chemie, published online in advance 19 November 2020.
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