/oss/taxonomy/term/2173/all en /oss/article/medical-health-and-nutrition-did-you-know/acne-and-diet-ambiguous-association <p>You have probably heard that drinking milk and eating chocolate causes acne or, at the very least, that they make it worse. Diet is often blamed for a teenager’s pimply skin, but is there good evidence behind this accusation?</p> Fri, 22 Nov 2024 22:14:36 +0000 Jonathan Jarry M.Sc. 10174 at /oss /oss/article/medical-history-did-you-know/bite-science-venoms <p>You are likely aware of the large number of drugs that have been developed from chemicals found in plants, including aspirin from willow bark, atropine from deadly nightshade, and both morphine and codeine from the opium poppy. Indeed, more than a hundred-twenty, or over one-quarter of all drugs that currently exist, are derived from plants, although many of these have been chemically modified from their original form so as to improve potency and/or reduce unwanted side effects.</p> Fri, 22 Nov 2024 16:02:03 +0000 Patricia Brubaker, Ph.D., F.R.S.C. 10173 at /oss /oss/article/did-you-know-general-science/acrylic-fingernails-harbour-interesting-chemistry <p>I was queried via email “if there are chemicals in acrylic fingernails.” I imagine the question was really about the safety of the ingredients because for many the term chemical has become synonymous with toxic substance. Well, yes there are chemicals in acrylic fingernails, just like in everything except in a vacuum. As far as safety goes, it is possible to have an adverse reaction to some of the ingredients but that is not common. What there is for sure in acrylic fingernails is a lot of interesting chemistry.</p> Wed, 20 Nov 2024 21:17:57 +0000 Joe Schwarcz PhD 10169 at /oss /oss/article/medical-history-did-you-know/sometimes-luck-serves-springboard-science-0 <hr /> <p><em>This article was first published in <a href="https://montrealgazette.com/opinion/columnists/the-right-chemistry-sometimes-luck-serves-as-a-springboard-for-science">The Montreal Gazette.</a></em></p> <hr /> <p>It is a lifesaver, stocked in every emergency room! N-acetylcysteine (NAC) is amazingly effective as an antidote to acetaminophen poisoning.</p> Fri, 15 Nov 2024 22:57:27 +0000 Joe Schwarcz PhD 10165 at /oss /oss/article/medical-history-did-you-know/lorenzos-oil-contributed-treatment-devastating-disease <hr /> <p><em>This article was first published in <a href="https://montrealgazette.com/opinion/columnists/the-right-chemistry-lorenzos-oil-raised-awareness-about-a-devastating-disease">The Montreal Gazette.</a></em></p> <hr /> <p>Given that he had trained and practised as a physician before turning to filmmaking, it is no surprise that George Miller was so captivated by the story of Michaela and Augusto Odone’s struggle to save their son from a deadly disease that he decided to turn it into a movie.</p> Fri, 08 Nov 2024 22:05:23 +0000 Joe Schwarcz PhD 10154 at /oss /oss/article/history-did-you-know/chemistry-lesson-farmer <p>The farmer had purchased some potassium permanganate. Exactly why he needed it isn’t clear but using it as a disinfectant to clean the udders and teats of cows before and after milking is a possibility. The compound can also be used to remove iron and hydrogen sulphide from well water. Potassium permanganate is a purple crystalline material that produces a very pretty purple color when dissolved in water. But when dissolved in some other liquids, the story can be quite different, as our unfortunate farmer discovered.</p> Wed, 06 Nov 2024 18:31:21 +0000 Joe Schwarcz PhD 10145 at /oss /oss/article/student-contributors-did-you-know-general-science/chemistry-spider-webs <p>“The itsy-bitsy spider climbed up the waterspout. Down came the rain and washed the spider out…”. But funnily her web remained unscathed. How?!</p> <p>With Halloween having just passed, we saw spider web decorations completely overtake houses, adorn witch hats and even candy wrappers. Despite my fear of spiders, I have an immense amount of respect for them and not for their contributions to our environment. I admire them because spiders are quite the biochemists, and their webs are a product of a biochemical reaction that we can only attempt to reproduce in the lab.</p> Wed, 30 Oct 2024 15:22:54 +0000 Angelina Lapalme 10130 at /oss /oss/article/history-did-you-know/true-story-frankenstein <p>"I collected the instruments of life around me, that I might infuse a spark of being into the lifeless thing that lay at my feet."  With these words Victor Frankenstein began his account of the adventure that would terrify generations of readers.  Although Mary Shelley's classic 1816 tale is usually thought of as a horror story, it is actually a thoughtful fantasy about the consequences of science gone astray.</p> Wed, 30 Oct 2024 14:03:49 +0000 Joe Schwarcz PhD 10129 at /oss /oss/article/technology-history-did-you-know/beginnings-chemical-synthesis <p>Chemistry can be roughly divided into two branches, analysis and synthesis. Chemists either try to identify existing substances or make new ones. By the early 19th century, a number of substances had been isolated from plants, with morphine from the poppy, quinine from cinchona bark, and coumarin from tonka beans being examples. However, given that these substances were derived from living species, they were believed to be endowed with a “life force” that could not be duplicated in the lab, and that such “organic” substances could not be synthesized.</p> Tue, 22 Oct 2024 16:52:42 +0000 Joe Schwarcz PhD 10124 at /oss /oss/article/did-you-know-general-science/when-science-allows-you-lose-your-head <hr /> <p><em>This article was first published in <a href="https://montrealgazette.com/opinion/columnists/the-right-chemistry-when-science-allows-you-to-lose-your-head">The Montreal Gazette.</a></em></p> Fri, 18 Oct 2024 20:01:39 +0000 Joe Schwarcz PhD 10121 at /oss /oss/article/history-did-you-know/having-trouble-faces-theres-name <p>If you drive to pick up your child after school and notice that sometimes they go and greet <i>another parent </i>instead who has a car similar to yours, what goes through your head?</p> Thu, 17 Oct 2024 21:57:16 +0000 Jonathan Jarry M.Sc. 10118 at /oss /oss/article/student-contributors-did-you-know/hardest-working-caffeine-addicts-bees <p>Wake up, go to work, seek out caffeinated beverages, get food, share food with others, store leftovers for later, and repeat. This routine sure does sound familiar, doesn’t it? With over 3.5 billion employed people worldwide following a variation of that basic routine, I wouldn’t blame you if you thought I was talking about humans. But what if I told you I was actually illustrating the day in the life of a bee? As it turns out, humans and bees have very similar lifestyles. They protect their own, work together during the day and seek the refuge of their hive at night.</p> Fri, 11 Oct 2024 14:30:52 +0000 Angelina Lapalme 10110 at /oss /oss/article/history-did-you-know/we-have-surplus-baby-boys <p>Be honest: have you ever made love to your partner in a specific position because you heard that it would result in a baby boy?</p> Fri, 04 Oct 2024 02:18:15 +0000 Jonathan Jarry M.Sc. 10100 at /oss /oss/article/medical-history-did-you-know/john-daltons-eyeball <p>In 1995, researchers from Cambridge University asked the Manchester Literary and Philosophical Society for a sample of an eyeball that had been sitting in a jar on a shelf since 1844. That eye had made some of the most important scientific observations in history. It—and another just like it—belonged to John Dalton, the English schoolteacher who in the late years of the eighteenth century formulated the atomic theory. </p> Wed, 02 Oct 2024 17:31:08 +0000 Joe Schwarcz PhD 10099 at /oss /oss/article/student-contributors-did-you-know/white-noise-machines-may-have-underlying-fineprint <p><a href="https://www.sleepfoundation.org/noise-and-sleep/white-noise#references-83455">White noise</a>, also known as broadband noise, is a type of noise that contains all the audible frequencies for humans. White noise is often present in our daily environment in the form of radio or television static, vacuums, fans, and air conditioner hums. When played in the background, white noise can reduce the sound difference between the environmental noise and background noise.</p> Fri, 30 Aug 2024 02:14:16 +0000 Daniela Padres 10051 at /oss