National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

There are many different types of disinfectants for use on surfaces. They are usually made for a specific purpose and are meant to be used a certain way because they don't work equally well against ...

Computational models are mathematical models used to numerically study the behaviour of complex systems by means of a computer simulation. A computational model can be used to make predictions of the ...

Often mistaken for one another, black raspberries are not the same fruit as blackberries. However, both are highly nutritious and can be enjoyed in many ways. Given that they have a similar deep ...

Moisturizers use oils and occlusive agents to seal skin and prevent water loss, while hydrators use humectants to pull water in. Adding water alone to your skin evaporates quickly and can be drying if ...