In an unprecedented step, researchers crafted a detailed model compatible with the universe’s accelerated expansion.

Why do some employees do better than others? According to goal-setting theory, one reason is that they have better, clearer goals. These goals guide their behavior towards better workplace output.

The subjective theory of value defines how an object's worth fluctuates according to personal views and context. Understand ...

Systems theory was not originally a business theory. Indeed, systems theory was proposed in the 1940s by biologist Ludwig von Bertalanffy, say Francis Heylighen and Cliff Joslyn in their article, ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Michio Kaku explores the eureka moment when Einstein came up with special relativity, the theory that spawned E = mc2. ByMichio Kaku Tuesday, October 11, 2005 NOVA Einstein realized that the world ...

Charles Darwin's Theory of Evolution is one of the most solid theories in science. But what exactly is it? When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...