ZME Science on MSN

You should actually turn off fans when it gets too hot. But when do they start making heat worse?

During a hot summer day, it’s very tempting to turn on a fan. After all, it’s so simple: you plug it in, feel the air move, ...
New Scientist on MSN

You should turn off fans when it's too hot – but how hot is too hot?

Fans can make you hotter rather than cooler, but the temperature at which you should turn them off depends on several factors ...