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Keyword: abrasion

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  • Geology Picture of the Week, June 20-26, 2007: Some Ventifacts

    05/24/2007 11:48:54 AM PDT · by cogitator · 19 replies · 338+ views
    Various
    Definition: "ventifact" -- A stone that has been flattened and sharpened by wind abrasion. Three fun examples: Jabba the Hutt's mouth (Dry Valleys, Antarctica) Never to touch again (Antarctica) The Furrowed Conglomerates (Argentina)
  • Sports Drink Can Be Tough on Teeth (Enamel abrasion. If you must, chug them or use a straw)

    05/13/2006 11:03:32 AM PDT · by NormsRevenge · 6 replies · 304+ views
    HealthDay on Yahoo ^ | 5/12/06 | Kathleen Doheny
    FRIDAY, May 12 (HealthDay News) -- Sports and energy drinks can be wonderful potions that hydrate top-tier athletes and weekend warriors alike. But here's some advice about their use, not from your trainer or your coach, but from a dental school professor: If you choose to use them, chug them. Don't sip or savor them all day. That's what J. Anthony von Fraunhofer, director of biomaterials research at the University of Maryland Dental School in Baltimore suggests. Otherwise, the drinks could be eating away your enamel, setting you up for tooth decay and other dental problems. Energy drinks and citrus-flavored...