Watch: How the 5 Major Religions Spread Across the World

The 5 largest religions today are Hinduism, Judaism, Buddhism, Christianity, and Islam–but it wasn’t always that way. In this video, Alex Kuzoian at Business Insider walks us through 5000 years of history, showing how the world’s religions initially took root in small geographic areas in southern Asia and the Middle East. They didn’t remain localized for long.

Workers Find School Chalkboard Drawings, Hidden for 100 Years

When contractors removed old chalkboards at Emerson High School in Oklahoma City earlier this week, they had a surprise waiting for them: behind those chalkboards was another set which hadn’t been touched since 1917.

Like a time-capsule, the old boards reveal a slice of history from nearly 100 years ago, including artwork for Thanksgiving and history on the Pilgrims, an unusual circular multiplication table, a calendar, and a list titled “My Rules to Keep Clean”. The reason we share this story here: just look at that handwriting.

Time Traveling with the Ad-Man’s Desk Book

“Direct mail advertising is an increasingly popular form of publicity.” Quotes like this are what make history so awesome. Today, direct mail is a decreasingly popular form of publicity. While still in wide use, any forward thinker in advertising is likely not upping the amount of direct mail they produce. It is truly inefficient and expensive in the 21st century, but Jack Watson’s grandfather would have argued differently in the late 1940s.

GeaCron: An Explorable Atlas of the World’s Past (Starting in 3000BC)

With the centennial of World War 1 upon us, it’s fascinating to look back at how different Europe was just 100 years ago. Then again, it was a lot different just 30 years ago too. GeoCron’s World History Atlas is an fascinating tool for peering back into the past and getting perspective on how different the world has been, even if the year you’re curious about is 2950BC. Although quite dated, the site makes it easy to travel anywhere from 3000BC up to the present day, watching the changes in civilizations as they rise and fall.

A Timeline of Underground Queer Cinema

The history of cinema is filled with life stories, but few that depict the LGBT community. In its century long existence, main stream cinema has typically shied away from the subject, deeming it too controversial or unpopular – but there were films being made. Fandor pulled together 50 films, both underground and mainstream, which paved the way for greater expression in queer cinema.

One Size Does NOT Fit All: How Tom Burrell Changed the World of Advertising

Before Tom Burrell, the advertising world was a very different place. But in the age of Mad Men, he was something different, too: an African-American man in advertising.

This Visualization Will Help You Understand the Unbelievable Number of People Lost in WWII

The Fallen of World War II is a documentary visualization that gives us a heartrending perspective of the casualties lost during the conflict. Created by filmmaker Neil Halloran, the 18-minute short breaks down the war’s tragedies, stacking them into a sobering tally of the people who lost their lives.

With numbers reaching into the tens of millions, it is difficult to comprehend the magnitude of the war, or how it compares to the conflicts of today. But with Halloran’s exceptional comparisons and storytelling, the magnitude of World War II is made clear.

This Time-Lapse of One World Trade Center was 11-Years in the Making

This 2-minute time-lapse from EarthCam has been in creation since October 2004 when construction began on One World Trade Center. It finally wrapping up this year on Memorial Day 2015… 11-years later. Just released as the official time-lapse video of the building’s construction, it begins with below-ground utility relocations, footings, and foundations for the new building. It completes as the structure is sealed by its highly reflective windows and takes its place as the tallest building in the Western Hemisphere, at 104 floors and 1,792 feet tall.

What Percentage of Your Life has the US Spent At War?

The Vietnam war was known for its length, but today the War on Terror has far surpassed it – stretching on for more than 13 years. For kids born in late 2001, there has never been a day when the United States wasn’t at war.

That sobering fact is clearly revealed in this excellent graphic created by The Washington Post. Here they chart the years in living memory that the US has been engaged in war, showing the percentage of people’s lives lived during times of war and peace.

A Gigantic 3D-Printed Zoetrope Based on Ruben’s Gruesome Painting, ‘Massacre of the Innocents’

British artist Mat Collishaw (previously) has built a huge 3D-printed zeotrope called All Things Fall. The highly detailed circular sculpture is populated by 350 different figures, environmental elements and architectural pieces which animate when the carousel is spun in front of a synchronised strobe light. In motion, a shockingly grisly scene is revealed.