For the third straight year, the S&P 500 looks poised to fall during the “Santa Claus rally” period. That has never happened ...

I have a new barometer. I live on the 32nd floor of an apartment building and want to know how to set it, taking into consideration the fact that I live high up. Air pressure is higher at lower ...

Air pressure is the weight of air above you; that is, from you on upward to the “top” of the atmosphere. “Top” is in quotation marks because, technically, the atmosphere becomes less and less dense as ...