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2. Liquid chalk - Wikipedia

   en.wikipedia.org/wiki/Liquid_chalk

   The term liquid chalk, or sharkchalk, refers to several different kinds of liquified chalk including liquid-chalk marking pens (with water-soluble ink), liquid-chalk mixtures (for athletic use: rock climbing, weightlifting, gymnastics), and liquid-chalk hobby-craft paints made of cornstarch and food coloring (some with small amounts of flour).

3. Wet-wipe marker - Wikipedia

   en.wikipedia.org/wiki/Wet-wipe_marker

   Wet wipe markers were often used on overhead projector transparencies, as they could be stored and transported easily, unlike a traditional chalkboard. With the rise of computerized slide-shows (e.g. PowerPoint ) in the classroom and office, overhead usage has reduced substantially, and with it, the wet wipe marker.

4. Color Wonder - Wikipedia

   en.wikipedia.org/wiki/Color_Wonder

   Color Wonder is a product made by Crayola, primarily intended for use by younger children, in which the special clear-ink marker only appears on the Color Wonder paper. Originally made with markers and paper, Color Wonder has also made specialty products including paints, etc. The Color Wonder products debuted in 1993.

5. Blackboard - Wikipedia

   en.wikipedia.org/wiki/Blackboard

   Stick-slip effect with a chalk on a blackboard. Chalk sticks are produced in white and in various colours, especially for use with blackboards. White chalk sticks are made mainly from calcium carbonate derived from mineral chalk or limestone, while coloured chalk sticks are made from calcium sulphate in its dihydrate form, CaSO 4 ·2H 2 O, derived from gypsum.

6. Writing implement - Wikipedia

   en.wikipedia.org/wiki/Writing_implement

   Both pencils and chalk exist in variants which can create marks in other colors, but colored pencils and colored chalk are generally considered to be art supplies rather than writing instruments. Similarly, although very young children may use colorful wax crayons to write words into their pictures, writing is not considered to be the primary ...

7. Can alcohol cause cancer? Here's what the science says

   www.aol.com/news/alcohol-cause-cancer-heres...

   A growing body of evidence has shown links between cancer and drinking alcohol. In a warning Friday, U.S. Surgeon General Vivek Murthy said cancer risk increases with the number of drinks, but ...