/oss/taxonomy/term/4510/all en /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/medical-critical-thinking-environment/there-are-safe-sunscreens-no-safe-tans <p>When it comes to health matters, scientists rarely make statements that do not begin with “may.” But here is one. Excessive exposure to sunlight causes skin cancer! There’s no “may” about it. And here is another one. Chemical protection can effectively reduce exposure. Uncertainties do, however, emerge when it comes to deciding on which specific chemicals to use. Activists claim that some sunscreens are unsafe and blame regulatory agencies for not looking after the welfare of the public, while manufacturers profess that their products have been thoroughly tested for safety and efficacy.</p> Wed, 03 Jul 2024 02:33:48 +0000 Joe Schwarcz PhD 9993 at /oss /oss/article/covid-19/let-sunshine-covid-19 <p>Mention Vitamin D and thoughts usually turn to bone strength. That is understandable since the relationship between this vitamin and the incorporation of calcium and phosphorus into bone is well established. In the early twentieth century, Sir Edward Mellanby in Great Britain was concerned about the incidence of rickets, a disease characterized by bow legs due to impaired bone formation.</p> Fri, 08 May 2020 16:00:00 +0000 Joe Schwarcz PhD 8237 at /oss