Have you seen this big metal tube from 1970? It’s a time capsule. And there’s a $50,000 reward for anybody who can find it.

I was going through President Dwight Eisenhower’s daily schedule (as one does) and just noticed what might be the weirdest entry I’ve ever seen. On December 10, 1954 Eisenhower was on his way from the White House to Camp David, and he picked up two hitchhikers.

Back in 1996 a young boy wrote a letter for school with predictions about the year 2016. Christopher Janitz was just nine years old and little did he know his mother would save that letter and present it to him on his 29th birthday.

While building a 3D model of the Apollo 11 Command Module Columbia, archivists at the Smithsonian uncovered hand-written notes and markings in areas of the spacecraft not seen in more than 40 years. The remarkable etchings offer a new glimpse into what life was life on the way to the Moon.

Do you have an old secret about the history of technology, a defunct cult, or a futuristic weapon that never made it off the drawing board? Would you like the world to know about it? Tell us.

Back in late 2014 the National Security Archive published a historical documentary produced in 2010 that went largely unnoticed. The film explores the history of nuclear weapons safety. And if you haven’t seen it yet, it’s pretty frightening.

Back in olden times, people used what were called “postage stamps” to send “letters” to “friends” and relatives. Back in olden times people also believed that the US space program would expand exponentially, returning humans to the moon. These stamps from 1989 survive as an artifact of that vision.

Fights broke out today in New Hampshire between anti-Marco Rubio robots and pro-Rubio humans. It could not yet be confirmed whether the robot uprising has begun, but someone needs to tell that woman that you can’t strangle a robot. It only makes them stronger.

You need to print your digital photos. Not next year, not when you have more free time—right now. I don’t care if your favorite dank memes are playing at the picture showhouse tonight (or whatever the kids are doing for fun these days). Start your first photobook tonight. It’s now or never. Your future self will be…

1910: A painting by H.C. Ireland, pointing toward a new technologically advanced age. [Library of Congress]

(Prakash Singh/AFP/Getty Images)

...and all of our necks are broken.

“The best perk of the White House is not Air Force One or Camp David or anything else, it’s the wonderful movie theater I get here,” President Bill Clinton told Roger Ebert in 1999.

Today Cory Doctorow tweeted out a fascinating image showing an RCA computer room in 1959. I can’t stop staring at it.

An exhibition that opens this week at London’s Building Centre focuses on the future of London’s roads. But perhaps the most compelling image from the show was actually created in 1926, imagining London’s skies crowded with planes, helicopters, and dirigibles.

The Bulletin of the Atomic Scientists announced today that the Doomsday Clock, which represents our proximity to an apocalyptic event, will remain at three minutes to midnight. But that’s still terrifying.

If you ever get a chance to travel back in time to the year 1989 (the year Back to the Future: Part II was released) make sure you bring a United Airlines boarding pass. People will be so excited to see that their dreams of one day owning a hoverboard will come true.