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Learning REDUCE in Excel completely changed how I use spreadsheets

REDUCE allows you to iterate through your data, building your result step-by-step, in the same way a loop operates in a ...

The 3-part fitness formula for longevity, according to a top sports doctor

Not sure whether to lift weights or do cardio for a longer life? A sports medicine doctor explains how to pick the right ...
The New York Times

The Best Surface Cleaners and Disinfectants

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Ellen Airhart Ellen Airhart ...
Scientific American

How to Identify a Prime Number without a Computer

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Here's the Best Way to Use the Famous 4% Rule in Retirement

The 4% rule is designed to make your savings last for 30 years. It has you withdrawing 4% of your savings plan balance your ...