Camp Century, a top-secret US military base…

Camp Century, a top-secret US military base, was built under the ice sheets of Greenland in 1960 to house missiles. Built under the cover of climate research, it housed 200 people and was powered by the world’s first portable nuclear reactor. Denmark didn’t uncover the base’s existence until 1995. 00

You’re Going to Lose it Over Thursday’s Amazon Deals

Image credit: 
amazon / istock

As a recurring feature, our team combs the Web and shares some amazing Amazon deals we’ve turned up. Here’s what caught our eye today, April 27.

Mental Floss has affiliate relationships with certain retailers, including Amazon, and may receive a small percentage of any sale. But we only get commission on items you buy and don’t return, so we’re only happy if you’re happy. Good luck deal hunting!

GADGETS 

[Upgraded] Anker 2-Port 24W USB Wall Charger PowerPort 2 with PowerIQ for iPhone 7 / 6s / Plus, iPad Air 2 / mini 3, Galaxy S Series, Note Series, LG, Nexus, HTC and More for $12.49 (list price $29.99)

Saimly Earbuds, In-Ear Metal Earphones, Stereo Bass Headphones with Mic (Black) for $29.99 (list price $35.99)

ALLPOWERS 18V 5W Portable Solar Car Battery Charger Bundle with Cigarette Lighter Plug, Battery Charging Clip Line, Suction Cups & Manual for $19.99 (list price $49.99)

Seneo PA014 Fast Wireless Charger 2 Coils QI Wireless Charging Stand(Sleep-Friendly) – No AC Adapter for $19.95 (list price $49.99)

Solar Charger,Dizaul 5000mAh Portable Solar Power Bank Waterproof/Shockproof/Dustproof Dual USB Battery Bank for cell phone,iPhone,Samsung,Android phones,Windows phones,GoPro Camera,GPS and More for $14.99 (list price $24.99)

D-FantiX Battery Tester, Universal Battery Checker for AA AAA C D 9V 1.5V Button Cell Batteries (Model: BT-168) for $6.99 (list price $9.99)

Bluetooth Headphones, Hussar Magicbuds Best Wireless Sports Earphones with Mic, IPX7 Waterproof, HD Sound with Bass, Noise Cancelling, Secure Fit, Up to 9 Hours of Play for iPhone Android (Upgraded) for $29.99 (list price $169.99)

Amprobe BAT-200 Battery Tester for $6.26 (list price $7.95)

Kindle Paperwhite Essentials Bundle including Kindle Paperwhite 6″ E-Reader, Black with Special Offers, Amazon Leather Cover – Onyx Black, and Power Adapter for $159.97 (list price $179.97)

Cowin E-7 Active Noise Cancelling Wireless Bluetooth Over-ear Stereo Headphones – Black for $69.99 (list price $99.99)

DOSS Touch Wireless Bluetooth V4.0 Portable Speaker with HD Sound and Bass (Black) for $32.99 (list price $89.99)

Micro USB Cables (2-Pack 3.3ft) Rampow Nylon Braided Samsung usb cable/charging cords for Android Devices, Galaxy, Sony, Motorola and More – Space Grey for $8.49 (list price $22.99)

Portable Chargers RAVPower External Battery Pack 16750mAh 4.5A Dual USB Output External Phone Charger Battery Bank Power Bank (iSmart 2.0 Technology) – Black for $26.99 (list price $99.99)

SanDisk Ultra 64GB microSDXC UHS-I Card with Adapter, Grey/Red, Standard Packaging (SDSQUNC-064G-GN6MA) for $21.99 (list price $39.99)

OldShark Full HD 1080P Dash Cam 170 Degree Wide Angle 3 Inch Dashboard Camera Vehicle Recorder Support G-Sensor, Night Vision, WDR, Parking Guard, Loop Recording 32GB SD Card Included for $58.99 (list price $89.99)

Serenilite Hand Therapy Stress Ball – Kiwi for $10.99 (list price $17.99)

KITCHEN

Popcorn Maker for Microwave – Green – Silicone Popcorn Popper – Collapsible Bowl with Lid – FDA approved BPA Free – Save on Hot Air and Machine Popcorn Popper – Cook Healthy Popcorn from Kernels for $15.99 (list price $49.99)

Rubbermaid Easy Find Lid Food Storage Container, BPA-Free Plastic, 6-Piece Set for $6.18 (list price $8.02)

OXO Good Grips Nylon Potato Masher for Non-Stick Cookware for $6.99 (list price $9.59)

The Pioneer Woman Cooks: Food from My Frontier for $17.99 (list price $29.99)

Rubbermaid Easy Find Lid Food Storage Container, BPA-Free Plastic, 6-Piece Set for $6.18 (list price $8.02)

Bellemain Stainless Steel 6-Pc. Measuring Spoon Set with D-Ring Holder, for Dry and Liquid Ingredients for $5.95 (list price $12.95)

DBKay Light Up LED Lightsaber Chopsticks Set, 2 Pairs – Red, Blue Battaries Included for $16.99 (list price $39.95)

The Bob’s Burgers Burger Book: Real Recipes for Joke Burgers for $12.01 (list price $19.95)

Lodge L9OG3 Cast Iron Round Griddle, Pre-Seasoned, 10.5-inch for $14.29 (list price $24.00)

Heat Changing Constellation Mug by The Unemployed Philosophers Guild – Stars Appear in the Night Sky on this Color Changing Coffee Cup – 10 OZ – BPA Free Ceramic – Comes in a Fun Colorful Gift Box for $13.95 (list price $16.95)

Lifewit Height Adjustable Pan Pot Oraganizer Rack, 5-Tier Kitchenware Cookware Holder Hanger Shelves Kitchen Cabinet Worktop Countertop Storage Solutions, Stainless Steel for $19.99 (list price $49.99)

6 Reusable K-Cups – Refillable Stainless Mesh Coffee Filter Pod for Keurig 2.0 and 1.0 Machines by STYDDI for $10.99 (list price $19.99)

Homeleader Smart Stick 3-Speed Hand Blender, 4-In-1 Multifunctional Food Processor, Stainless Steel, 400W, K39-038 for $34.99 (list price $85.99)

Pictek Apple Slicer, Stainless Steel Apple Peeler Corer and Slicer with Suction Base, Slicing Coring and Peeling Machine, Red for $15.99 (list price $39.99)

Electric Blender Protein Shaker Bottle, Digoo DG-VX1 450ml Free Portable Vortex Mixer Creative Auto Movement Detachable Smart Mixer Cu for $16.99 (list price $33.37)

Emoji Pancake Pan – Smiley Face Pan Cake Griddle with 7 Unique Flapjack Faces- Non-stick Surface for $19.99 (list price $29.99)

INTEY Cocktail Shaker 24-Ounces Stainless Steel Cocktail Shaker with Double Measuring Jigger for $15.99 (list price $19.99)

HOME 

Home-it (24 Pack) Natural wood hangers – Solid Wood Clothes Hangers – Coat Hanger Wooden Hangers for $21.99 (list price $39.99)

Seville Classics Foldable Storage Cube/Ottoman, Charcoal Grey for $19.99 (list price $24.99)

The Original Asia 18″ Teak Shower Bench for $129.95 (list price $149.99)

Ottomanson Paterson Collection Grey Contemporary Moroccan Trellis Design Lattice Area Rug for $35.63 (list price $49.99)

Essence of Bamboo Pillows – The Original Premium Hypoallergenic Down Alternative Fiber Pillow with Bamboo Derived Rayon / Poly Cover- Designed and Filled in USA (Queen 2-Pack) Best Sleep Ever for $39.99 (list price $149.99)

Mellanni Bed Sheet Set – Brushed Microfiber 1800 Bedding – Wrinkle, Fade, Stain Resistant – Hypoallergenic – 4 Piece (Queen, White) for $16.70 (list price $59.99)

Black + Decker BDH2000L 20-Volt Max Lithium Ion Battery Cordless Hand Vacuum for $65.19 (list price $79.99)

Natures Miracle Laundry Boost Stain and Odor Additive – 32 FL Oz for $5.59 (list price $6.99)

Sunbeam Fleece Heated Throw, Hamilton Plaid/Slate Black, TSF8UP-R871-31A00 for $42.86 (list price $59.99)

Sterilite 01553V01 5 Shelf Unit, Flat Gray Shelves & Legs, 1-Pack for $30.70 (list price $60.00)

Organize It All 2-Tier Shelf with Towel Bars (1753W-1) for $14.55 (list price $30.02)

Utopia Bedding Soft Brushed Microfiber Wrinkle Fade and Stain Resistant 4-Piece Queen Bed Sheet Set – Grey for $17.99 (list price $42.95)

WBM Himalayan Glow Hand Carved Natural Crystal Himalayan Salt Lamp with Genuine Neem Wood Base, Bulb and Dimmer Control for $30.98 (list price $39.95)

Puredown Feather and Down Pillow, Standard Size, Set of 2 for $31.99 (list price $59.99)

Affresh Washer Machine Cleaner, 6-Tablets, 8.4 oz for $9.26 (list price $13.98)

Sunbeam AERO Ceramic Soleplate Iron with Dimpling and Channeling Technology, 1600W for $25.59 (list price $49.99)

O-Cedar Multi-Use Scrunge Scrub Sponge (Pack of 6) for $8.99 (list price $9.99)

HOPDAY Wash Bags, Delicates Mesh laundry Bags, Super Premium Quality Bra lingerie Protection Washing Drying Bag with Rust Proof Flow Zipper, Set of 6 (3 Medium & 3 Large)-Black & White for $9.89 (list price $19.99)

Equinox International Queen/Standard Size 17 X 25-Inches Shredded Memory Foam Pillow with Removable Bamboo Soft Pillow Case for $15.95 (list price $39.99)

HEALTH AND BEAUTY

Active Wow Teeth Whitening Charcoal Powder Natural for $24.99 (list price $29.99)

Gardinesca Beard Oil for $15.99 (list price $31.99)

BESTOPE Blackhead Remover Pimple Comedone Extractor Tool Best Acne Removal Kit – Treatment for Blemish, Whitehead Popping, Zit Removing for Risk Free Nose Face Skin with Metal Case for $9.99 (list price $19.99)

Banana Boat Ultra Mist Sport Performance Broad Spectrum Sun Care Sunscreen Spray – Twin Pack – SPF 30, 2 count, 6OZ for $14.95 (list price $16.99)

Conair Velvet Touch Paddle Hair Brush for $4.25 (list price $6.99)

Revlon Pro Collection 1875W Infrared Dryer for $16.19 (list price $29.99)

Oral-B Sensitive Gum Care Electric Toothbrush Replacement Brush Heads Refill, 3 Count for $13.77 (list price $19.99)

OFFICE, SCHOOL, AND ART SUPPLIES

Prismacolor Premier NuPastel Firm Pastel Color Sticks, 12-Count for $9.51 (list price $13.99)

American Crafts Value Pack Baker’s Twine, 5-Yard, 12-Bright Colors, 24-Pack for $8.35 (list price $14.99)

Singer Quilting Twin/Specialty Needles for $7.99 (list price $9.99)

Sullivans Tailor Scissors, 8-Inch, Gold for $9.66 (list price $19.99)

Silhouette Rhinestone Starter Kit for $22.89 (list price $39.99)

School Smart 089919 Blank Dice with Adhesive Labels, 1/2″ x 1/2″, Green, White and Red (Pack of 36) for $8.84 (list price $12.48)

BIC BU3 Retractable Ball Pen, Medium Point (1.0 mm), Assorted Colors, 18-Count for $6.57 (list price $10.08)

Scotch Precision Ultra Edge Scissors, 8 Inch, 3-Pack (1458-3AMZ) for $18.12 (list price $25.62)

Epson WorkForce WF-3640 Wireless Color All-in-One Inkjet Printer with Scanner and Copier (E-Commerce Packaging) for $99.99 (list price $199.99)

Cedar Markers Liquid Chalk Markers – 12 Pack With Free 40 Chalkboard Labels – Amazing Neon Color Pens Including Gold And Silver Ink. Reversible Bullet And Chisel Tip And A Brand New Revolutionary Cap. for $15.99 (list price $35.99)

SUDEE STILE Colored Pencils 150 Unique Colors (No Duplicates) Art Drawing Colored Pencils Set with Case Sharpener for $23.99 (list price $95.96)

Lineon 50 Colors Gel Pens,Gel Pen Set for Adult Coloring Books Art Markers for $10.99 (list price $49.99)

Tanmit Glitter Gel Pens, 96 Gel Colored Pen Set with Grip Including 48 Unique Sparkly Colors & 48 Refills for Adult Coloring Books Crafting Doodling Drawing Art for $16.99 (list price $30.00)

Outus Glitter Vinyl Heat Transfer Paper and PU Heat Transfer Vinyl, 10 by 10 Inches, 8 Colors, 8 Sheets for $18.99 (list price $29.88)

Laptop Stickers [100 pcs], Bezgar Car Stickers Motorcycle Bicycle Luggage Decal Graffiti Patches Skateboard Stickers for Laptop – Random Sticker Pack for $9.99 (list price $19.99)

Elmer’s All Purpose School Glue Sticks, Washable, 30 Pack, 0.24-ounce sticks for $9.86 (list price $14.30)

Shrinky Dinks Jewelry for $5.64 (list price $10.00)

School Smart 081943 Websters Tote Tray, 12″ x 8 x 5″, Yellow for $7.38 (list price $11.30)

Love2Knit Interchangeable Knitting Needle Set, US10-15 for $23.81 (list price $29.95)

OUTDOORS, GARDEN, AND SPORTS

Kohree 120 Micro LEDs Christmas String Lights Battery Powered 40ft Long Ultra Thin String Copper Wire Lights with Remote Control and Timer Perfect – 2C Batteries powered for $12.98 (list price $68.98)

PetSafe SSSCAT Spray Deterrent for $29.95 (list price $34.95)

Plant Theatre Cocktail Garden Kit – 6 Varieties to Grow – Great Gift for the Gardener who Enjoys a Cocktail! for $12.99 (list price $26.99)

TOOLS

OxyLED OxySense T-01 DIY Stick-on Anywhere 4-LED Touch Tap Light Push Light, LED Night Light for Closets, Attics, Garages, Car, Sheds, Storage Room for $7.99 (list price $19.99)

Stanley 84-079 6-Piece Bi-Material Mini Plier Set for $12.99 (list price $25.80)

Black & Decker BDEG400 6-Amp Angle Grinder, 4-1/2-Inch for $28.99 (list price $44.99)

Kidde FA110 Multi Purpose Fire Extinguisher 1A10BC, 1 Pack for $19.98 (list price $42.99)

TEKTON 30508 Wood Handle Rubber Mallet Set, 3-Piece for $12.76 (list price $25.73)

Meguiar’s G18216 Ultimate Liquid Wax – 16 oz. for $16.97 (list price $22.99)

OMorc 6-in-1 60W Soldering Iron Kit – Adjustable Temperature, 5pcs Different Tips, Desoldering Pump, Stand, anti-static Tweezers and Solder Wire for $16.99 (list price $29.99)


April 27, 2017 – 11:00am

Math and Nature Inspired This Artist’s Mesmerizing Spiral Sculptures

filed under: art, math, nature
Image credit: 
iStock

You don’t need to be a math expert to appreciate John Edmark’s “Blooms.” When photographed with a short shutter speed or under a strobe light, the rotating sculptures take on an otherworldly energy. But knowing the numbers behind Edmark’s designs makes them even more impressive.

Edmark, an artist and professor at Stanford University, uses the Golden Angle when sculpting his spirals. The Golden Angle is derived from the Golden Ratio, which (as Edmark describes it) is when “the smaller is to the larger, as the larger is to the whole.” In a circle, that angle comes out to roughly 137.5°. This number appears all over the place in nature, from the spiraling sequence of leaves in succulents to the arrangement of seeds in sunflowers.

John Edmark recreates this perfect pattern in his studio. To see how his does it, check out the video from SciFri below.

[h/t Sploid]


April 27, 2017 – 7:00am

Still Capital-izing

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Kara Kovalchik

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Still Capital-izing

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Wednesday, April 26, 2017 – 10:12

Schedule Publish: 

Scientists Decode the Secret of Glowing Mushrooms

filed under: fungi, News, science
Image credit: 
Cassius V. Stevani/IQ-USP, Brazil
Artists’ conception of multicolored glow. Image Credit: Cassius V. Stevani/IQ-USP, Brazil

We’re just going to come right out and say it: mushrooms are weird. They pop up without warning and they can change the weather. Many of them can also glow in the dark, and we don’t know why. Now, at least, we might know how, as researchers writing in the journal Science Advances reveal the bizarre, “promiscuous” process of fungal bioluminescence.

Lots of animals light themselves up, glowing or flashing to send messages, find prey, or flirt with potential mates. And scientists have a pretty good understanding of how that happens. When a pair of enzymes called luciferin and luciferase combine with energy and oxygen, the resulting chemical reaction makes a compound called excited oxyluciferin. But excitation is not sustainable, so the oxyluciferin releases its fizzy energy in the form of light.

Scientists hypothesized that fungi were probably doing something similar (although really, with fungi, anything is possible).

Neonothopanus gardneri in the dark. Image Credit:  Cassius V. Stevani/IQ-USP, Brazil

To learn more, an international team of researchers analyzed extracts from two glowing mushrooms, Brazil’s Neonothopanus gardneri and Vietnam’s poisonous Neonothopanus nambi.

They found that both species were sticking with the traditional luciferin-luciferase playbook … kind of. They were definitely making their own proprietary blend similar to excited oxyluciferin.

But the luciferase that the mushrooms were using was, in the scientists’ words, “promiscuous”—that is, it was happy to mix and mingle with multiple types of luciferin. And while the only bioluminescent fungi we know about all glow green, the researchers write that the luciferase’s indiscriminate approach could lead to a rainbow of lights in different colors and intensities.

“Future work on the isolation, characterization, and heterologous expression of the luciferase will stimulate the development of fungal bioluminescence–inspired applications,” the authors write. In other words, hey, we know about this bizarre thing now. We might as well use it.


April 27, 2017 – 6:30am

Morning Cup of Links: The Journal of the Whills

filed under: Links
Image credit: 
Disney/Lucasfilm

The Legacy of Star Wars’ Journal of the Whills. The early idea was to narrate the saga, and you won’t believe who was going to do it.
*
J.R.R. Tolkien and C.S. Lewis went to the theater together to see Snow White and the Seven Dwarfs together. They both hated it.
*
Minoule is an urban cat who discovers that there’s a canary living in the building across the street. He takes grave risks to get that bird, and along the way, a lot of other things are going on in the city.
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There Is A Venomous Snake In This Picture, But Good Luck Finding It. Even after it’s pointed out, you might easily step on it.
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If a Unicorn Frappuccino doesn’t turn you on, maybe you’d prefer some charcoal-black Goth ice cream! Get them at ice cream shops in Los Angeles and New York.
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The new issue of National Geographic features an in-depth look at What Makes a Genius. We meet examples of genius, from Leonardo da Vinci to jazz pianist Keith Jarrett, with the research into what makes those people different from the rest of us.
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Gen. George Patton’s wife put a Hawaiian curse on his ex-mistress. She was dead within days.
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12 Creepy Lullabies From Around the World That Will Keep You Up at Night. They make “Rock-a-bye Baby” seem sweet and innocent.


April 27, 2017 – 5:00am

Why Do Our Bodies Need Electrolytes?

Image credit: 
iStock

Sports drinks like Gatorade are marketed as a source of body-boosting electrolytes, which begs the question: What exactly is an electrolyte, and why are they so important? The short answer is that they’re dissolved salts, which break down into positively and negatively charged ions that conduct electricity and water. These charges control nerve impulses and the flow of water in our cells.

Electrolytes are lost from the body through sweat—but seeing as how we get plenty from food, should we really guzzle sugary athletic beverages after a tough workout? The American Chemical Society weighs in with their latest Reactions video:

[h/t Reactions]


April 27, 2017 – 3:00am

How a Pelican Survives a 40-Foot Drop Into the Ocean With No Broken Bones

Image credit: 
iStock

Pelicans dive into the ocean all the time. They hunt by spotting fish from high in the air before zeroing in and dropping down into the water dozens of feet below. While they make it look like no big deal, it’s a dangerous maneuver. From 40 feet up, if they hit the surface of the water wrong, it’s like slamming into a brick wall.

PBS’s video series Deep Look recently took a dive into how brown pelicans manage to pull this off without breaking their necks, going blind, or otherwise maiming themselves. Part good form, part physiology, it’s an impressive feat. The muscles around their back tighten to protect their spine, a membrane flashes over their eyes to protect their vision, and their sword-shaped bill slices through the water.

And once they hit, they’ve got a built-in life vest that keeps them floating along the surface of the water instead of plunging down into deeper waters. When the pelican takes a deep breath as it dives, air rushes into special sacks under their skin and in their bones, called pneumatic foramina, that act like a cushion against the water. Their signature gular pouch doesn’t just hold fish, either. It acts like a parachute to slow the bird down, only inflating with liquid instead of air (it catches up to three gallons of water in the process).

Watch the full video to find out more.

If you’re really into pelicans, you can also experience a GoPro view of a pelican learning to fly.


April 27, 2017 – 1:00am