The Alt+Enter shortcut isn't limited to new formulas you write—you can go back and clean up any messy formulas at any time.

The formula H₂O shows that water is made from two atoms of hydrogen (H) bonded to one atom of oxygen (O). Katie: Time for some science. And today it's a chemistry classic, the periodic table. And here ...

President Donald Trump this week unleashed an economic hurricane by hitting dozens of countries with a punishing wave of tariffs. In order to explain the specific tariff imposed on any given country, ...