Fluoride is added to water systems of more than two-thirds of Americans. Some Florida cities banned it for health concerns.

The Pamukkale travertines are limestone slopes and thermal water pools that have attracted visitors since before the days of Ancient Greece, when the spa town of Hierapolis was founded at the top.

Winter's icy conditions can make driveways and walkways treacherous, but using the wrong salt for concrete can lead to ...

A new, bendable type of concrete being invented at Michigan State University can "self-heal" and "self-heat," potentially eliminating the need to salt or brine roads for snow.