An underrated outdoor pastime, chalk isn’t just for classroom black boards and baby milestone photoshoots. As you might remember from your own childhood, sidewalk chalk can provide hours of fun and ...

Chalk crystallizes differently from the way we once thought it did. This discovery will allow the development of new scale inhibitors and other materials, and has also consequences for climate change.

This spring, an 80-year-old Japanese chalk company went out of business. Nobody, perhaps, was as sad to see the company go as mathematicians who had become obsessed with Hagoromo Fulltouch Chalk, the ...

Participants are responsible for abiding by the campus chalking policy, which restricts chalking to concrete or asphalt exterior sidewalks that are exposed to natural elements. Chalking must be done ...