The novel propane heat pump has a coefficient of performance of up to 4.9 and can reportedly achieve a flow temperature of up ...

A device containing a pneumatic logic circuit made from 21 microfluidic valves could be used as a new type of air-powered ...

A leaf vacuum is needed when your lawn is covered with fallen leaves. We tracked down our favorites, including ones that ...

After hours: September 19 at 5:02 PM EDT ...