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9 Ways to Celebrate the Spring Equinox

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Getty Images

Twice a year the Sun sits vertically above the equator, giving us nearly equal day and night everywhere on the planet. This year, March 20 is the vernal equinox. Here are nine ways to celebrate with your (roughly) 12 hours of daylight.

1. STAND AN EGG ON END

Eggs are often associated with the spring equinox because of their standing as a symbol of birth and fertility, and the myth that one can be balanced on its end only on that day likely relates to the day's re-balance of day and night. But don't worry: If you're too busy to experiment with egg balancing on the day of the equinox, you can certainly try it the following day: it takes practice, but eggs can be balanced any day of the year.

2. HONOR DIONYSUS WITH A BREAD PHALLUS

Dionysus, the god of fertility, wine, flowering plants, poetry, and theater, is often associated with phalluses (for fertility) and bread (because of ritual meals involving the consumption of bread and wine). To celebrate the coming of spring, modern Pagans offer up tables of wine, flowers, and phallic symbols made of food.

3. CELEBRATE THE NEW YEAR

Countries like Iran, India, and Turkey, among many other areas of Asia, observe the New Year on the spring equinox, generally in observance of Nowruz (which means "new day" in Persian). Specific religions also adhere to the holy day, including the Bahá'í Faith.

4. TAKE A TRIP TO MEXICO

That's where you'll find Chichén Itzá (one of the New 7 Wonders of the World) and the ancient Mayan pyramid, El Castillo, where the Return of the Sun Serpent occurs on the northern balastraud every equinox.

5. HAVE A FAMILY REUNION

Called Shunbun no hi, the Japanese spend the week of the vernal equinox visiting their hometowns, spending time with family, and tending to ancestral graves.

6. TELL A STORY

March 20 is World Storytelling Day in the northern hemisphere (the southern hemisphere celebrates this for the autumn equinox), so take this opportunity to share stories of your family, childhood, or this year's theme, "Transformation."

7. GIVE YOUR MOTHER SOME LOVE

Many Middle Eastern countries like Egypt, Iraq, Saudi Arabia, and Syria celebrate Mother's Day on the same day as the equinox. But even if you live elsewhere, we're sure your mom would appreciate a call.

8. VISIT A MEGALITHIC MONUMENT

You know, like Stonehenge. On the summer and winter solstices and spring and autumn equinoxes, Stonehenge is open to visitors (and the local Druids) who want to witness the sunrise over the stones.

9. FINALLY UNDERSTAND WHY THE EASTER BUNNY LAYS EGGS

This comes from an ancient Saxon tale about their lunar (or spring/summer) goddess, Eostre. One story generally goes that Eostre found an injured bird and transformed it into a hare to save its life; the transformation was incomplete, and in gratitude for saving her, the hare laid eggs and decorated them as gifts to Eostre (or, alternately, the hare found an egg and decorated it for the goddess). More likely, it was that rabbits and eggs were both seen as symbols of fertility, and Eostre was the goddess representing spring and fertility. Parts of the myth were eventually absorbed into the more modern Easter celebrations, as both festivals occurred around the same time.

A version of this story originally ran in 2009.

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iStock // Ekaterina Minaeva
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technology
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Cs California, Wikimedia Commons // CC BY-SA 3.0
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science
How Experts Say We Should Stop a 'Zombie' Infection: Kill It With Fire
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Cs California, Wikimedia Commons // CC BY-SA 3.0

Scientists are known for being pretty cautious people. But sometimes, even the most careful of us need to burn some things to the ground. Immunologists have proposed a plan to burn large swaths of parkland in an attempt to wipe out disease, as The New York Times reports. They described the problem in the journal Microbiology and Molecular Biology Reviews.

Chronic wasting disease (CWD) is a gruesome infection that’s been destroying deer and elk herds across North America. Like bovine spongiform encephalopathy (BSE, better known as mad cow disease) and Creutzfeldt-Jakob disease, CWD is caused by damaged, contagious little proteins called prions. Although it's been half a century since CWD was first discovered, scientists are still scratching their heads about how it works, how it spreads, and if, like BSE, it could someday infect humans.

Paper co-author Mark Zabel, of the Prion Research Center at Colorado State University, says animals with CWD fade away slowly at first, losing weight and starting to act kind of spacey. But "they’re not hard to pick out at the end stage," he told The New York Times. "They have a vacant stare, they have a stumbling gait, their heads are drooping, their ears are down, you can see thick saliva dripping from their mouths. It’s like a true zombie disease."

CWD has already been spotted in 24 U.S. states. Some herds are already 50 percent infected, and that number is only growing.

Prion illnesses often travel from one infected individual to another, but CWD’s expansion was so rapid that scientists began to suspect it had more than one way of finding new animals to attack.

Sure enough, it did. As it turns out, the CWD prion doesn’t go down with its host-animal ship. Infected animals shed the prion in their urine, feces, and drool. Long after the sick deer has died, others can still contract CWD from the leaves they eat and the grass in which they stand.

As if that’s not bad enough, CWD has another trick up its sleeve: spontaneous generation. That is, it doesn’t take much damage to twist a healthy prion into a zombifying pathogen. The illness just pops up.

There are some treatments, including immersing infected tissue in an ozone bath. But that won't help when the problem is literally smeared across the landscape. "You cannot treat half of the continental United States with ozone," Zabel said.

And so, to combat this many-pronged assault on our wildlife, Zabel and his colleagues are getting aggressive. They recommend a controlled burn of infected areas of national parks in Colorado and Arkansas—a pilot study to determine if fire will be enough.

"If you eliminate the plants that have prions on the surface, that would be a huge step forward," he said. "I really don’t think it’s that crazy."

[h/t The New York Times]

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