Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated ...

The oil giant is pushing for a new carbon accounting method, which worries climate advocates but shows Exxon is sticking with its emission-reduction goals despite Trump’s attacks on low-carbon energy ...

The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...