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The Tooth Fairy Science of Bite Mark Comparisons

4 Mar 2021

The idea of using teeth to identify someone has a long history. One of the earliest recorded cases (and perhaps the very first one) dates back to the first century. The wife of Roman Emperor...

A Tryst with Amethyst

23 Feb 2021

An attractive amethyst geode sits on my desk. Geodes are rocks with an internal cavity that is filled with crystals of a mineral. In the case of amethyst that mineral is quartz, tainted with iron...

A Feminine Touch

19 Feb 2021

Women have played a larger role in the history of science than is generally recognized. Although Marie Curie鈥檚 discovery of radium, Lise Meitner鈥檚 work on nuclear fission, Dorothy Hodgkin鈥檚...

The Smell of Books

18 Feb 2021

Video of Dr Joe Schwarcz on the smell of old and new books

What is that smell when I get a root canal done?

8 Jan 2021

Undergoing a root canal procedure is not one of the great pleasures of life, but it is a highly effective technique for saving teeth. The idea is to remove the diseased pulp of a tooth and then...

Celebrating Hanukkah with Candles, Latkes, and a Bit of History

10 Dec 2020

Why are potato latkes a traditional food to celebrate the Jewish festival of Hanukkah? Frankly, it isn鈥檛 clear. But first, a quick recap of what Hanukkah is all about...

Here's Jeopardy!

10 Nov 2020

In many households, 7:00 pm is time for Jeopardy (although these days, with video recording and repeats on Netflix, any time can be Jeopardy time). For thirty-seven years many of us have invited...

Bewitched by Witchcraft

29 Oct 2020

It is part of human nature to try to rationalize illness and misfortune. Today, many point accusing fingers at pesticides, food additives, or electromagnetic radiation as possible culprits in...

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