The Fuel Problem The demand for liquid and gaseous fuels must sooner or later outstrip our resources of petroleum and natural gas. What of the processes that get these fuels from such solids as coal?

Many people believe that mixing two toilet cleaners will give a “stronger” clean, especially when dealing with tough bathroom stains. But here’s the thing: combining cleaning products can do more harm ...

Meditation feels out of reach for a lot of people. If the mere idea of sitting still with your own thoughts for an extended period of time sounds stressful, we hate to break it to you, but you’re ...