In this video, I demonstrate how to make an oxygen generator using manganese dioxide (MnO2) and hydrogen peroxide (H2O2) Angry protesters throw snowballs after US immigration officer kills driver in ...

Green hydrogen expanded rapidly during the pandemic but has struggled to maintain momentum amid rising costs and limited renewable power availability. Europe’s ambitious hydrogen targets have been ...

John Carlsen has more than a decade of experience testing and reviewing home tech products, with a major focus on smart home security. He earned his BS in journalism from Utah Valley University. In ...