P vs. NP asks: are these two classes actually the same? If P = NP, then every “hard” problem is secretly fast to solve; we ...

Executive function describes a set of cognitive processes and mental skills that help an individual plan, monitor, and successfully execute their goals. The “executive functions,” as they’re known, ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Strip bonds, also known as zero-coupon bonds, are securities where principal and coupon payments are separated and sold individually. They carry no reinvestment risk since the face value is paid only ...

It can be easy to take our teeth for granted until something goes wrong. Our teeth play a major role in our ability to eat and digest food, and can affect our overall health. Adults typically have 32 ...

Heart disease refers to any problem affecting the heart, such as coronary artery disease, arrhythmia, and heart failure. Symptoms and treatments depend on the type of heart disease someone has. Heart ...

Chronic kidney disease (CKD) is a gradual loss of kidney function often caused by diabetes or high blood pressure (hypertension). It affects about 35.5 million people in the U.S. and usually has no ...

It's Troll Week on Mashable. Join us as we explore the good, the bad, and the ugly of internet trolling. It may seem counterintuitive, but it's possible for trolling to reach an art form — think ...