The first law of thermodynamics states that energy cannot be created or destroyed, but it can be transferred from one location to another and converted to and from other forms of energy.
The birds and the bees is a story parents tell their children to deflect the question "Where do babies come from?" The phrase refers to the talk about sex.
Engineering is the application of science and math to solve problems. Here we explore the different types of engineering.
The Pleistocene epoch lasted from about 2.6 million to 11,700 years ago and included the last ice age, when glaciers and giant megafauna dominated the landscape.