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Hot Springs At Yellowstone Changed Their Color Due To Tourist Activity 48

An anonymous reader writes Researchers say that the different colors of the hot springs in Yellowstone National Park are caused by human contamination. From the article: "Researchers at Montana State University and Brandenburg University of Applied Sciences in Germany have created a simple mathematical model based on optical measurements that explains the stunning colors of Yellowstone National Park's hot springs and can visually recreate how they appeared years ago, before decades of tourists contaminated the pools with make-a-wish coins and other detritus. If Yellowstone National Park is a geothermal wonderland, Grand Prismatic Spring and its neighbors are the ebullient envoys, steaming in front of the camera and gracing the Internet with their ethereal beauty. While the basic physical phenomena that render these colorful delights have long been scientifically understood—they arise because of a complicated interplay of underwater vents and lawns of bacteria—no mathematical model existed that showed empirically how the physical and chemical variables of a pool relate to their optical factors and coalesce in the unique, stunning fashion that they do."

Submission + - Librarians: The Google Before Google

An anonymous reader writes: NPR has an article about the questions people ask librarians. Before the internet, the librarian was your best bet for a quick answer to anything on your mind. "We were Google before Google existed," NYPL spokesperson Angela Montefinise explains. "If you wanted to know if a poisonous snake dies if it bites itself, you'd call or visit us." The New York Public Library in Manhattan recently discovered a box of old reference questions asked by patrons and plans to release some in its Instagram account. Here are a few of the best:
  • I just saw a mouse in the kitchen. Is DDT OK to use? (1946)
  • What does it mean when you dream of being chased by an elephant? (1947)
  • Can you tell me the thickness of a U.S. Postage stamp with the glue on it? Answer: We couldn't tell you that answer quickly. Why don't you try the Post Office? Response: This is the Post Office. (1963)
  • Where can I rent a beagle for hunting? (1963)

Submission + - What You Should Know About College (jigsy.com)

conseilvdi95z writes: A million different decisions go along with going to college, and you will face them all. These are choices that can impact not just your college years but your entire future. Review the tips that ...

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