Watch a simple but fascinating chemistry experiment using phenolphthalein and dry ice to demonstrate pH changes in real time. See how carbon dioxide forms acid in water and causes a dramatic color ...

Explore the fascinating effects of dry ice when tested with a 60,000 psi waterjet cutter. This video showcases exciting phenomena, including the creation of a cool fog effect when water and dry ice ...

Another cold start tomorrow, then snow returns Tuesday -- with rain and wind following shortly after. Dan Smith has the latest.