Bees Can See the Electric Field of Flowers

Flowers are pretty and colorful to you and me, but to a bee, they’re downright electrifying. You see, bees can sense the electric field that surrounds a flower: Dominic Clarke and Heather Whitney from the University of Bristol have shown that bumblebees can sense the electric field that surrounds a flower. They can even learn to distinguish between fields produced by different floral shapes, or use them to work out whether a flower has been recently visited by other bees. Flowers aren’t just visual spectacles and smelly beacons. They’re also electric billboards. Learn how a flower’s electric field is actually also useful for bees as it tells them whether other bees have visited it before. Ed Yong of Not Exactly Rocket Science explains: Link

See more here:
Bees Can See the Electric Field of Flowers

The House with a Pop-up Roof

It’s like a giant’s lunchbox! This house, which is named Shadowboxx, is in the San Juan Islands in the state of Washington. Olson Kundig Architects designed the 16 by 20 foot roof over the bathhouse to open and close with the push of a button. Link -via Dornob

Read the original post:
The House with a Pop-up Roof

Florida Man: the World’s Worst Superhero

There’s Batman, Spider-Man, Superman, and of course, Florida Man. Florida Man is in the news constantly, with headlines enshrined in a Twitter feed dedicated to “the world’s worst superhero.” Link   -via Metafilter

Read this article:
Florida Man: the World’s Worst Superhero

Opalized Dinosaur Tooth

Photo: Carl Bento/Australian Museum Surely you’ve seen fossils in museums, but what about this: opalized dinosaur tooth. Opalized fossils occur when silica settled into cracks in the dinosaur bone and then hardened into opal. This one above is a particularly fantastic specimen: an opalized theropod dinosaur tooth from the Australian Museum.

See the original post:
Opalized Dinosaur Tooth

Quadruple DNA Helix

Sometimes the double helix likes to mix it up! Scientists at the University of Cambridge, United Kingdom, have found that DNA at the end of chromosomes actually have a very different structure: instead of double-stranded, they have four strands. Balasubramanian’s group has been pursuing a four-stranded version of the molecule that scientists have produced in the test tube now for a number of years. It is called the G-quadruplex. The “G” refers to guanine, one of the four chemical groups, or “bases”, that hold DNA together and which encode our genetic information (the others being adenine, cytosine, and thymine). The G-quadruplex seems to form in DNA where guanine exists in substantial quantities. Jonathan Amos of BBC has the post: Link

Visit link:
Quadruple DNA Helix

Beautiful, Fragile Nudibranchs Can Kill You

If you’re hungry while on the ocean floor, don’t chow down on these fellows, no matter how tasty they look. The Chromodoris annae, like many nudibranchs, is soft, colorful and poisonous. Wildlife photographer David Doubilet took photos of many different species. You can view more pictures at the link. Link -via It’s Okay to Be Smart | Photo: David Doubilet

Read More:
Beautiful, Fragile Nudibranchs Can Kill You

What Does a “New Year” Really Mean?

Today is New Year’s Day, which simply means the earth has completed another journey around the sun. But how in the world do we know how long that takes? To answer the question, Phil Plat has “taken a simple concept like ‘years’ and turned it into a horrifying nightmare of nerdery and math.” Let’s take a look at the Earth from a distance. From our imaginary point in space, we look down and see the Earth and the Sun. The Earth is moving, orbiting the Sun. Of course it is, you think to yourself. But how do you measure that? For something to be moving, it has to be moving relative to something else. What can we use as a yardstick against which to measure the Earth’s motion? Well, we might notice as we float in space that we are surrounded by billions of pretty stars. We can use them! So we mark the position of the Earth and Sun using the stars as benchmarks, and then watch and wait. Some time later, the Earth has moved in a big circle and is back to where it started in reference to those stars. That’s called a “sidereal year” (sidus is the Latin word for star). How long did that take? Let’s say we used a stopwatch to measure the elapsed time. We’ll see that it took the Earth 31,558,149 seconds (some people like to approximate that as pi x 10 million = 31,415,926 seconds, which is an easy way to be pretty dang close). But how many days is that? Well, that’s a second complication. A “day” is how long it takes the Earth to rotate once, but we’re back to that measurement problem again. But hey, we used the stars once, let’s do it again! You stand on the Earth and define a day as the time it takes for a star to go from directly overhead to directly overhead again: a sidereal day. That takes 23 hours 56 minutes 4 seconds = 86,164 seconds. But wait a second (a sidereal second?)—shouldn’t that be exactly equal to 24 hours? What happened to those 3 minutes and 56 seconds? I was afraid you’d ask that—but this turns out to be important. And that’s only the beginning of the explanation of where we get the concepts and the measurements for a “day” and a “year.” Read the rest at Bad Astronomy. Link ( Image credit: ESA ©2009 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA )

See the original article here:
What Does a “New Year” Really Mean?

Ancient Roman Socks

These magnificently preserved socks date back to Roman Egypt, c. 250-420 A.D. Are they designed for two-toed people? Not quite: The big toe divided from the others suggest that the socks were probably meant to be worn with sandals. It is unclear whether the socks formed offerings to the dead or were used as foot coverings. Note that the holes have not laddered (though they have spread somewhat).  Link -via Curious History  | Photo: Victoria and Albert Museum

View original post here:
Ancient Roman Socks

The Eggheaded, Noggin-Filling Story of Eggnog

There’s something deeply polarizing about eggnog. People either love it or hate it and of those that love it, even they are usually at opposing sides when it comes to homemade nog versus the commercial variety. Whether you love it have drank gallons of it this year or hate it and gag at the very thought of it, here is a little trivia about the milky treat. Image Via texascooking [Flickr] What the Heck is A Nog Anyway? The true origin of the drink is hotly debated, as is the reason for its name. Some, including Alton Brown explain that “nog” was a 17 th century slang for a strong beer brewed in East Anglia, England. Others say that the name was a combination of the words “egg” and “grog,” a term for a drink made with rum. When the words are put together to form “eggngrog,” it’s easy to see where “eggnog” would come from. As for the origin of the drink, it is believed to have come from posset, a medieval drink made with warm milk, booze and spices. One thing’s for sure though, before the drink came to America, it was popular with British aristocrats –but they called it an Egg Flip. Its Patriotic Roots in the New World In England, only the rich could afford the fresh eggs and milk required to make “egg flips,” but when the drink crossed the Atlantic, it soared in popularity as practically every American had access to these fresh ingredients and some kind of hard alcohol. Perhaps the biggest difference between the American eggnog and the British predecessor though is that brandy and sherry were the most common alcohols used in England, but these two items were heavily taxed in America so the locals instead turned to rum –which was particularly cheap thanks to a close trade association with the Caribbean. When the Revolutionary War made it more difficult for the colonists to find rum, they instead turned to using bourbon in its place –which is the most common alcohol used in eggnogs today. George Washington was a huge proponent of the creamy mixture and helped cement it into the nation’s history. In fact, he kept eggnog on hand all year long. Of course, his was not just any eggnog. White House records show that his recipe included rum, rye, whiskey, sherry and brandy. Need more proof of how important eggnog was in our fledgling nation? Look no further than the Eggnog Riot of 1926. It all started when some students at the West Point Military Academy, where alcohol was prohibited, smuggled some whiskey into their barracks to make eggnog for their Christmas party. As officials started to crack down on some of the drunk cadets, other drunken revelers started smashing and burning property at the school. By the time the riot was over, twenty cadets and one enlisted soldier were court-martialed. Amongst the many rioters, though he wasn’t court-martialed, was the future president of the Confederacy, Jefferson Davis. Image Via indigo_jones [Flickr] About the Drink Itself Eggnog is essentially a milk and egg custard and the base is almost identical to ice cream –except that the traditional alcoholic varieties have too much alcohol to freeze.  Those that cook their eggnog before serving it actually make a real custard. While the CDC says that you should always cook your eggnog prior to consumption in order to kill off any possible salmonella contamination, Alton Brown claims that if your mix contains at least 20% alcohol, is kept below 40 degrees and sits for at least a month, the alcohol will kill off any bacteria. The alcohol also managed to keep the milk from going sour and if you don’t cook the eggnog, it takes at least a month for the flavor to really develop. Alton Brown has a great booze-heavy recipe on Mental Floss if you want to make some of your own at home. Want the traditional eggnog flavor without alcohol and the risk of salmonella poisoning? Then try using the new pasteurized eggs available at most grocery stores. They’re pasteurized at a steady, low temperature to kill of bacteria without cooking the eggs themselves. Old School or New School As for the commercial varieties, there is a reason why real eggnog fans will always badmouth the store stuff. Under U.S. law, commercial eggnogs only need to contain at least 1% of a drink’s final weight to be made from egg yolk solids. If you buy the cheaper alternative “eggnog flavored milk,” it only has to have .5% egg yolk solids. Other than that, commercial eggnog can also contain milk, sugar, modified milk ingredients, glucose-fructose, water, carrageenan, guar gum, natural and artificial flavorings, spices, monoglycerides and colorings. Image Via chotda [Flickr] Need an Alternative? You lactose intolerant eggnog fans are in good company and people have been working for a long time to develop something you can drink without worry. In fact, nondairy eggnogs have been around at least since 1899, when Almeda Lambert printed a recipe for eggnog in her Guide for Nut Cookery that featured a drink made from coconut cream, eggs and sugar. I hope all you eggnog fans enjoyed this article, but before you celebrate too much, you’d better head to the store and grab a few more cartons –or get to mixing up some of your own, before it heads away for the season. Sources: Wikipedia #1 and #2 and Mental Floss #1 , and #2

Continue Reading:
The Eggheaded, Noggin-Filling Story of Eggnog

Rare Guinea Pig Hybrid Breeds

Behold the mighty guinea lion, a savage beast that kills with the power of cuteness. Adventurous animal lovers will discover many more examples of guinea pig-animal hybridization at the link below, but don’t let their adorability fool you- these cuties are packing a mean set of chompers! Link

Follow this link:
Rare Guinea Pig Hybrid Breeds