Woman writing scientific formulas on chalkboard
Science is the systematic study of the structure and behavior of nature, the universe and everything contained within. It organizes knowledge in the form of testable hypotheses and predictions, which are determined (and sometimes proven) through experimentation and observation. In addition to the academia associated with it, science can refer to the pursuit of this knowledge as well.
Scientific experiments have given rise to the scientific method— a set methodology of study that transcends all disciplines of science. With roots in classical philosophy, science has drastically changed our knowledge and understanding of the universe. Consequently, science has also given rise to countless advancements in technology.
There are several categories of science, each with its own set of scientific branches that in turn include a multitude of different disciplines and sub-branches. For example, biogeography is a discipline within ecology, which in turn is a branch of biology. Measurement and mathematics — a science in itself — play important roles across the sciences.  (Photo: Shutterstock)

At least this year wasn't as bad as A.D. 536 — the worst year in human history

Mysterious Texas canines have 'ghost' DNA of red wolves

Boost your baking with a pinch of science

Are humans making penguins sick?

Astronomers just found the most distant object in our solar system, so they named it 'Farout'

Vitamin D deficiency linked to depression

You've heard of black holes, but what about white holes?

Why does the sky sometimes turn purple?

NASA's Voyager 2 has entered interstellar space

There's a massive ecosystem twice the size of the world's oceans beneath our feet

Global CO2 emissions hit record high in 2018, as Greenland ice melt goes into 'overdrive'

The Leaning Tower of Pisa is leaning a bit less these days