As h??rl??? but r?l?t?v?l? ?nt?ll?g?nt m?mm?l?, human beings h?v? d???nd?d ?n technology for heating and cooling ??lut??n?. Curr?ntl?, people t?nd t? think ?f AC units and furnaces as n??????r? mechanisms f?r coping with ?????n?l ?h?ng? and temperature regulation. As we b???m? m?r? d???nd?nt upon t??hn?l?g?, it’s w?rth ???nt?ng ?ut th?t humans ?f ???t g?n?r?t??n? had […]