A newborn baby girl, yawning. (Photo: Wikimedia/Martin Falbisoner)

A Sleepy Guide to Why do People Yawn?

You’d think answering a simple question like why people yawn would be simple. However, it’s not straightforward despite extensive scientific research.

Two women and two men assist during childbirth. (Image: Wikimedia/National Library of Medicine/Gustave Joseph Witkowski)

Why Were Chainsaws Invented?

Why were chainsaws invented? These handy modern tools have a surprising background. Find out their origins in medicine and in preventing maternal death

Colgate Dental Cream (Toothpaste) With Gardol - ca. 1950s (Photo: Wikimedia/Thistle33)

When Was Toothpaste Invented?

From ashes of ox hooves, eggshells, pumice, and myrrh to fluoride and sodium lauryl sulfate, the history of toothpaste has come a long way in 7000 years.

Deafening silence (Photo: Unsplash/ Kristina Flour)

What Is A Deafening Silence?

A deafening silence is the absence of sound, but it’s the noise that comes before it that really makes it deafening. You can only appreciate the silence because of the noise beforehand.

For thousands of years, Europeans had no clue about where birds went during Winter. Until 1822, when a German hunter shot a stork and discovered an 80cm long African spear protruding from its neck. This provided the first evidence of bird migration to Africa.

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