History

A Beginners Guide to Time Travel: Explaining the Time Zones

Eva Kellner B.A.Sc. — Fri, 16 Jan 2026 11:00:00 +0000

In a way, time travel does exist. Just hop on a plane from Montreal to Vancouver, and you jump back three hours. Or better yet, fly in the other direction to Auckland, and find yourself 18 hours in the future. Of course, we owe these time differences to the Earth’s rotation, but also to the human-decided lines that identify various time zones. (This subject is, in fact, very personal to me because I am currently writing this at 5:30 in the morning due to the infamous jetlag most of us have experienced at some time.)

If You Play With Fire, You Can Get Burned

Joe Schwarcz PhD — Thu, 15 Jan 2026 03:20:30 +0000

Fountain candles are small tubes filled with chemicals that when ignited spew out a plume of glowing sparks into the air. They sure capture attention! The effect can last a few seconds (cake fountain candles), up to a minute (bottle fountain sparklers) or several minutes (special effects for stage shows and concerts). These devices all consist of some combustible materials packed into a cardboard tube with the length of the visual effect being determined by the amount and specific composition of the chemicals packed into the tube.

A Cultural History of Yogurt

Joe Schwarcz PhD — Fri, 09 Jan 2026 11:00:00 +0000

This article was first published in The Montreal Gazette.

There are some stories so good to tell that one hesitates to check their accuracy. Like the one about King Francis I of France (1494-1547) being cured of his digestive problems by eating yogurt.

Building the Modern Skyscraper: Architectural Lessons from Wedding Cakes

Eva Kellner B.A.Sc. — Fri, 02 Jan 2026 11:00:00 +0000

The Home Insurance Building, the world’s first skyscraper, and the Burj Khalifa, the world’s tallest building, both owe their origins in the city of Chicago.

Of Mistletoe, Frankincense and Myrrh

Joe Schwarcz PhD — Wed, 24 Dec 2025 06:46:53 +0000

Mistletoe has had a certain mystique about it since ancient times, probably on account of the curious way it grows. The plant is a “hemiparasite,” meaning that it can either grow in soil, or, more commonly, it can spring from the branch of a tree. Ladies probably stood under the branch in awe, admiring the pretty flowers, giving gentlemen an opportunity to take a little liberty with the fair sex.

Traffic Has Increased at My Office. It's Because of the Ducks

Joe Schwarcz PhD — Fri, 05 Dec 2025 19:15:56 +0000

This article was first published in The Montreal Gazette.

Milk History Does a Body Good

Joe Schwarcz PhD — Fri, 28 Nov 2025 21:15:23 +0000

This article was first published in The Montreal Gazette.

The history of humans drinking cow’s milk is fascinating and not devoid of controversy.

How the Yew Tree Can Deliver Life … or Death

Joe Schwarcz PhD — Fri, 21 Nov 2025 17:34:21 +0000

This article was first published in The Montreal Gazette.

The 17-year-old girl presented in the emergency room feeling nauseous and drowsy. She quickly went downhill, with her heart rate and blood pressure shooting up frighteningly and her heart’s rhythm becoming erratic. Then, cardiac arrest.

The Tongue Map Trap

Sophie Tseng Pellar BSc — Fri, 21 Nov 2025 02:51:14 +0000

Let me set the scene: it’s the evening, I’m doomscrolling in bed (as is tradition), and a video from Emma Chamberlain pops up. She's slurping espresso with a “coffee expert” who confidently explains that this technique helps spray the coffee across different “taste zones” of the tongue: sweet at the tip, salty on the sides, bitter at the back, and so on. I sit up, wide-eyed, heart beating loud. Why? Because I’ve just witnessed a science myth that I’ve never encountered before in the wild.

The ancient Greek poet Homer characterized it as “liquid gold.” We are talking about olive oil.

Joe Schwarcz PhD — Wed, 12 Nov 2025 11:00:00 +0000

Homer was the supposed author of the Iliad and the Odyssey, two classics of Greek literature. “Supposed” because there is no real historical record of when he lived, or indeed, if he ever did live. Some historians believe that the Iliad and Odyssey were really compilations of stories passed down by many people over the years. In any case, if Homer did live, he certainly could have referred to olive oil as “liquid gold,” since this was the oil used to flavor food in antiquity.

There Are No Cows in Louis Pasteur's Crypt

Joe Schwarcz PhD — Fri, 07 Nov 2025 16:44:44 +0000

Ask the question: “Who introduced the pasteurization of milk?” and I can pretty well guarantee that the answer will be: “Louis Pasteur.” I know because I have carried out that little experiment numerous times. Surprisingly, that answer is wrong.

My story starts decades ago, with a visit to the Pasteur Museum in Paris that houses the apartment where Pasteur and his wife lived during the last seven years of his life, a collection of his scientific equipment, and the ornate crypt where his remains lie.

A Century in the Making: The DNA Discovery Story

Sophie Tseng Pellar BSc — Fri, 31 Oct 2025 22:13:49 +0000

When most people hear about the discovery of DNA, they picture James Watson and Francis Crick in 1953, triumphantly holding up a model of the double helix. But DNA’s story doesn’t begin, or end, there. In fact, the molecule that carries our genetic code had been sitting quietly in lab notebooks for almost a century before Watson and Crick entered the scene. The journey from obscure cellular “gunk” to the blueprint of life is a tale full of false starts, overlooked heroes, and more than a little scientific drama.

Double, Double Toil and Trouble

Joe Schwarcz PhD — Wed, 29 Oct 2025 12:53:37 +0000

Oh, human nature! When something goes wrong, we try to rationalize why the calamity has occurred. We try to find the cause of our illness or misfortune. Today, many people point accusing fingers at pesticides, vaccines, food additives or electromagnetic radiation as possible culprits that may undermine our health. In less sophisticated times, witchcraft was deemed to be responsible. Natural disasters and physical ailments were thought to be due to spells cast by those in league with the devil. Then, as now, people feared what they did not understand.

Seeds of Hope Require Roots of Integrity: Remembering Jane Goodall

Eva Kellner B.A.Sc. — Fri, 24 Oct 2025 10:00:00 +0000

On Wednesday October 1st, 2025, Dr. Jane Goodall passed away while on a speaking tour in the United States. As an esteemed scientist whose life mission was to advocate for wildlife, promote conservation, and strengthen ties between humans and other members of the animal kingdom, she stayed true to her mission up until her final moments. A researcher who spent more of her time traveling than not (300 days out of the year), Dr.

Beauty, Blackmail and ‘Truth in Advertising’

Joe Schwarcz PhD — Fri, 17 Oct 2025 16:56:22 +0000

This article was first published in The Montreal Gazette.

Before Helena Rubinstein, before Elizabeth Arden and before Estee Lauder, there was “Madame Rachel.” What a fascinating story of rags to riches to … prison.