Natural family planning isn't as effective as other methods of birth control. Between two and 23 couples using this type of planning will get pregnant each year.

This training and racing method directed runners to incorporate walk intervals into their runs and is now referred to more generally as the run/walk method.

Depletion is an accrual accounting method used to allocate the cost of extracting natural resources such as timber, minerals, and oil from the earth.

Learn about the methods that criminals use when they are looking to launder money and how the government seeks to prevent them.

What is carbon-14 dating? The invention of radiocarbon dating elegantly merged chemistry and physics to develop a scientific method that can accurately determine the age of organic materials as old as ...

More than half of Americans now use contactless payments, according to Mastercard poll Contactless payments are on the rise in the U.S. with Americans using various touch-free payment methods that ...