They say you should dress for the job you want; now you can wear clothes that do a job themselves. Scientists have created a ...

A quick calculation: To estimate a battery’s internal resistance, you can use a simple voltage-drop method when the ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

Solar warranties only protect you if they stay valid. Learn the overlooked installation, maintenance, and documentation steps ...

A "charged" metal hydride is still at least 90% metal and, as of today, 7% or so hydrogen. Energy density is not as good as a ...