sandrewn

1. In the lower 49 states, yes. 2. You can learn something new at GA every day. sandrewn

Why are Some Glaciers Blue? Bulging sea-ice looks blue because of light scattering. Credit: Michael Studinger One of the most amazing sights in Antarctica is its stunning blue ice, rippling like a frozen sea. Patches of blue-hued ice emerge where wind and evaporation have scoured glaciers clean of snow. The translucent, wind-polished surface reflects a stunning turquoise color when the polar sun peeks above the horizon. Antarctica is the only place on Earth with these incredible stretches of blue ice. Blue ice is treacherously slippery, making walking on the surface a challenge, but people risk it for the chance to trek back through time. That's because blue ice is some of the oldest ice in Antarctica. On the continent, scientists have dug up blue ice that is 1 million years old, and researchers are searching for even older ice. When glacial ice first freezes, it is filled with air bubbles. As that ice gets buried and squashed underneath younger ice on top, the older ice starts to take on a blue tinge. As the ice grows denser, the bubbles become smaller and smaller. Without the scattering effect of air bubbles, light can penetrate ice more deeply. To the human eye, ancient glacial ice acts like a filter, absorbing red and yellow light and reflecting blue light, creating the beautiful blue hues of a glacier. In contrast, snow is white because it is chock full of air bubbles. Snow reflects back the full spectrum of white light, just like a freshly poured soda has bubbly, light-colored foam on top. Blue-ice area near Antarctica's Mount Howe. Credit: Stephen Warren Blue ice sometimes emerges at the edge of Antarctica, where glaciers tumble into the sea. Summertime melting can also create smooth patches of blue glacial ice. But by definition, true blue-ice areas most often appear near Antarctica's mountain ranges. The continent's great glaciers are like slow-moving rivers of ice. When these flows hit a barrier, such as a mountain range, the deeper layers of ice are forced upward, like water flowing over a submerged rock in a riverbed. Blue ice also tends to surface on the lee side of mountains, where fierce winds strip away snow and ice. Over time, the older layers are revealed through evaporation. Blue ice covers only about 1 percent of Antarctica, according to a 2010 study in the journal Antarctic Science. Blue-ice areas usually extend for a few miles (a few kilometers) in any direction. Antarctica's blue ice turns out to hold a rare treasure: meteorites. More than 25,000 meteorites have been collected from blue-ice areas in Antarctica. The evaporating glacial ice leaves behind meteorites that have fallen on the frozen continent over the course of thousands of years, concentrating the space rocks in one small area. Meteorite hunters make annual pilgrimages to blue-ice patches, scanning the ice while traveling in snowmobile caravans. Blue-ice areas are also used as runways, for landing aircraft with wheels instead of skis. Governments including Italy, Australia, Norway, Russia and the United States all operate blue-ice runways. sandrewn

The reason why worry kills more people than work is that more people worry than work. ~Robert Frost sandrewn

Recorded in 1964. It was meaningful then and now it would seem that 53 years later, now more so than ever. https://www.youtube.com/watch?v=JxvVk-r9ut8 sandrewn

When you compliment your children, praise them for inner qualities such as kindness, honesty and perseverance so they will strive to contribute to the world in meaningful ways. ~ Toni Schutta sandrewn

Congratulations, a joyful occasion indeed! Since I've have known you, you have always been a thoughtful, caring and considerate person. A great supporter and friend! Now at last, your writing abilities have been justly rewarded, purple is a fine color, don't you agree? I celebrate with you from afar(does the happy dance). sandrewn

Anyone who says ' I've seen it all ', obviously hasn't lived long enough, I know I haven't. The Evolution of Censorship on TV sandrewn

Wise men speak because they have something to say; Fools because they have to say something. ~Plato sandrewn

The Benefits Of Peanut Butter http://www.prevention.com/food/smart-shopping/healthy-eating-why-peanut-butter-good-you sandrewn I have one jar open and a spare (= 2 jars)

The Chameleon Animation, Trompe L'oeil 11 May 2015 0 Comments Do you notice anything peculiar about this chameleon standing on a green branch? Would you believe that it is actually not a chameleon at all? Would you believe that it is made of two painted women? Take a look at the image a bit closer and you can figure out exactly how this extraordinary body painting was done. Watching the animation of the chameleon walking below, you can begin to see how the two women are configured and painted to resemble the lizard. Johannes Stoetter and his assistant (Saphira) spent about four hours planning this project and then another six hours actually painting the two women featured. (via Johannes Stoetter) sandrewn (this has to be one of my favorites)

White Cats, Eye Colors and Deafness http://messybeast.com/whitecat.htm sandrewn

"There's always going to be bad stuff out there. But here's the amazing thing - light trumps darkness every time. You stick a candle into the dark, but you can't stick the dark into the light." ~Jodi Picoult sandrewn

Thinking back to high school and the rules there, lead me to think of this... sandrewn

Most of us look back on our school days with nostalgia. Proof positive that time does heal all OR that senility starts shortly after leaving there. The following shows others had it worse than you. If you thought the rules you had to follow were tough, check these out and count your blessings. sandrewn (Pink Floyd - Another Brick In The Wall)

"When I was 5 years old, my mother always told me that happiness was the key to life. When I went to school, they asked me what I wanted to be when I grew up. I wrote down 'happy'. They told me I didn't understand the assignment, and I told them they didn't understand life". ~John Lennon sandrewn (what would you do, if I sang out of key)

How often have you seen something and asked yourself, how did they do that? The following fall into that category, but this time we get to see the HOW. This artist Jordan Molina, is a masterful creator of illusion. Just watching them being drawn before my eyes, leaves me in awe of his skills. https://rumble.com/v30e2i-20-amazing-illusions-hand-art.html sandrewn

The picture says it all. sandrewn (have you signed your donor card)

There is no shame in turning back, when you discover you are on the wrong path. sandrewn (learn from your mistakes)

Two Red SnakesMotion 29 October 2016 No Comments Yet - Share Your Thoughts The two snakes appear to be in motion even though this image is completely static. This another terrific example of an anomalous motion illusion created by Professor Akiyosh Kitaoka. His illusions are very popular on this site, primarily because he creates some of the best motion illusions in the business. (via Akiyoshi Kitaoka) Find 11 Trout Hidden Objects 18 October 2016 No Comments Yet - Share Your Thoughts Try to find 11 trout in this hidden image wildlife painting by artist Steven Michael Gardner. Look carefully as some are very easy to find while others are quite obscure. If you get stuck, you can find the answer to this puzzle by clicking here. sandrewn (I did not find all of them)

Try this common sense quiz. BrainBashers https://www.brainbashers.com/commonsense.asp sandrewn (to my shame, I missed them all)

"Watch the sunrise at least once a year, put a lot of marshmallows in your hot chocolate, lie on your back and look at the stars, never buy a coffee table you can't put your feet on, never pass up a chance to jump on a trampoline, don't overlook life's small joys while searching for the big ones." ~H. Jackson Brown. Jr sandrewn

10 Mind Blowing Optical Illusions sandrewn

When you think of it, that over a hundred years ago, most everything that we take for granted did not exist. Then the first video, 10 Creepy Vintage Videos (scary footage) is that much more impressive. The second one, 10 Scariest Videos On The Internet, keep in mind when these were made. sandrewn

" He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying." ~Friedrich Nietzsch sandrewn

You'll never find a rainbow if you're looking down. ~Charles Chaplin sandrewn