The Mpemba effect, in which hot systems cool faster than cold ones under the same conditions, was first described by Aristotle more than 2,000 years ago. In 1963 it was rediscovered by Tanzanian ...

Commercial hot water systems must handle continuous operation while keeping costs manageable. Gas models provide fast heating, while electric and heat pump units reduce long-term expenses. Solar ...

Capable of dramatically reducing hot water costs, the best electric tankless water heater offers many benefits. This guide has the top picks.

Once the hot spots are identified, Duffy’s team will implement changes to reduce the close encounters between aircraft. Duffy also said he has learned that air traffic control systems across the ...