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Why Sunscreen Still Beats Steak

30 Apr 2026

This story started like many modern tales of data distortion do, where the science isn’t denied outright, but bent just enough to fit a more convenient (and lucrative) narrative. Let me regretfully...

The Vitamin D Puzzle

24 Jan 2024

Walk into any pharmacy or health food store and you will see shelves filled with vitamin D supplements. Then stroll over to a bookstore and you will find all sort of books touting the wonders of...

Why do we get wrinkles?

3 Nov 2023

This article was first published in The Skeptical Inquirer.

Splendid Rays and Skin Cancer

29 Mar 2022

Helios, the sun god in Greek mythology, rode a chariot across the sky, east to west, sunrise to sundown, year round, as dusk bestows silvery moonlight accompanied by stars that extend to infinity...

Does Vitamin D Protect Against COVID? Seems Not

25 Jun 2021

This article was originally published in the Montreal Gazette...

Sunshine and Moonbeams

17 Dec 2020

When the imaginative little boy was asked in school to give an example of how heat makes things expand and cold causes them to contract, he authoritatively stated that in the summertime the days...

Smoking, Vitamin D, and COVID-19

20 May 2020

This article was first published in The Montreal Gazette....

Why is the Sky Blue? Or Better Yet, Why is the Ocean Blue?

31 Jan 2020

The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller...

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