Pew Research Center is a nonpartisan, nonadvocacy fact tank that informs the public about the issues, attitudes and trends shaping the world.

Abstract: The increasing levels of Variable Renewable Energies (VRE) require additional levels of flexibility in present power systems due to their intermittency and the resulting needs of reserve for ...

John Hood explores how misinterpreting data can lead to flawed conclusions about government policies and their effectiveness.

Bayes' theorem is a statistical formula used to calculate conditional probability. Learn how it works, how to calculate it ...

The Beneish model was designed by M. Daniel Beneish to quantify eight variables that can indicate that a company is misrepresenting its profits. Here’s how it works.

Learn how hybrid cars work, the different types of hybrids, and how to decide if one makes sense for your driving and budget.