Microsoft Excel uses double quotation marks to signify text within formulas. When it sees these marks, it uses the text and discards the quotes. Typing quotation marks directly into a cell is not an ...

Cell death terminates normal cellular functions, including respiration, metabolism, growth and proliferation. Cell death can be non-programmed, for example as the result of accidental injury or trauma ...

The science is unsettled, but researchers say there is cause for concern. Tiny plastic particles like these—called microplastics—are added to some exfoliating skincare gels and can get into the ...