Tag Archives: heating

Feeling the chill this winter? Many parts of the USA and Canada just can’t get warm enough! With the frigid temps come higher electric consumption, due to the constant heating in our homes and offices. While investing in long-term, energy-efficient solutions, such as solar and geothermal power, are some of …

Early humans living in southern Africa in the Middle Stone Age after 65,000 years ago used advanced heating techniques to produce silcrete blades, according to a new study. This image shows heated silcrete artifacts made by Middle Stone Age humans at Klipdrift Shelter, South Africa. Image credit: Katja Douze / …