Hydrogen peroxide is a common ingredient in over-the-counter teeth whitening products and in-office dental teeth whitening treatments. You can make a teeth whitening rinse or paste at home using a 3% ...

Tucked between fjords and islets on the blustery shoreline of the Magellan Strait, the tiny city of Punta Arenas sits at the tip of South America, just above the Antarctic Circle. Wind tears at the ...

China aims to lower the price of green hydrogen and expand its use to more sectors, doubling down on the costly clean fuel as uncertainty rocks global energy markets. The nation will soon launch a ...