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Article content “Gee, I don’t know why people don’t pick up after their dogs. It stinks here,” moaned a friend as we were walking down a tree-lined street in Washington. The unmistakable scent of doggie doo was in the air, but heaps of the stuff would have been needed to produce such an intense odour. No such piles of poop were in sight, but there were plenty of what looked like squashed yellow cherries on the sidewalk. And they reeked! A mix of vomit, sweaty socks and outhouse fragrance would be an apt description. An upward glance revealed that they were not cherries, but rather the seed pods of ginkgo biloba trees, easily recognized by its duck foot-like leaves. Indeed, the ancient Chinese name for the tree, “yinxin” translates as “duck’s foot.” ....
The Right Chemistry: The problems with PFAS Chemicals used in certain cross-country ski waxes, non-stick surfaces and fire-fighting foam, among other things, also have major downsides. Author of the article: Joe Schwarcz • Special to the Montreal Gazette Publishing date: May 14, 2021 • 4 hours ago • 5 minute read • Cross-country skiers are loath to give up fluorinated waxes because they reduce friction, and when race results are measured in fractions of a second, wax makes a difference, Joe Schwarcz says. Nevertheless, the International Ski Federation is poised to ban fluorinated waxes, he adds. Photo by Lisa Rathke /The Associated Press Article content Say “perfluoroalkyl substances.” That’s a mouthful, right? Luckily, we can get away with using the acronym PFAS, pronounced “peefas.” But the real question is whether we are getting a literal mouthful of these chemicals when we eat or drink. Time to get an earfu ....
Article content “I don’t want to gross you out, so instead of chicken guts I will use a piece of red silk.” That’s what I tell the audience as I begin my demonstration on “psychic surgery.” Magicians, be they professionals or hobbyists, tend to have strong feelings about anyone who abuses their beloved art by fleecing the public. As “scientists of the stage,” magicians use a variety of scientific and engineering principles to entertain audiences and have a strong disdain for charlatans who perform the same illusions but claim to do so by paranormal means. Fake psychics fall into this category, although I suppose the term “fake” is redundant. ....