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Counting tokens from Mehrgarh in Late Stone Age India Just starting out the year with the Stone Age? We've got you covered: Quatr.us has articles about the Stone Age all [...]

Dome of the Rock mosque, Jerusalem The Islamic holiday of Ramadan moves slowly backward through Earth’s seasons, because the Islamic calendar is slightly shorter than the solar year. A few [...]

Pieter Brueghel, Carnival on the left and Lent on the right So, you know how every year we harvest all this food in the fall, and every year we go, [...]

What's the history of Valentine's Day? Find out here! Valentine's Day History Phaedra falls in love with the hunter Hippolytus (Pompeii, ca. 79 AD) Want to know why Valentine hearts [...]

Martin Luther King, Jr. Quatr.us is proud to join the Black Lives Matter movement in the United States and everywhere. First, check out our article about the Civil Rights Movement [...]

American Christmas Tree (about 1812 or 1819) Sorry I fell a little behind there: I was finishing the revisions for my book on the world history of swimming, which should [...]

It may seem like everything's on hold while we wait at home, but time passes whether we go places or not, and it's almost Thanksgiving! Here's a few articles on the complicated [...]

Lights of a Diwali celebration Reposting our Diwali article, with best wishes for the holiday to everyone! Diwali What is Diwali? A woman creates a pattern with colored sand [...]

  Carrying a puppet of Guy Fawkes to burn him Remember, remember the fifth of November... reposting last year's post about Guy Fawkes' Day This post considers which side we Carl Zeiss 451235 Inverted Microscope Light Condenser 0.4 Phase

I've got a new blog post up over at The Rambling - check it out! It's about how Europeans thought about swimming in the 1700s - a complicated set of contradictory ideas. [...]