Science
Biology, chemistry and physics — how the natural world actually works.
The sciences explain the world by testing claims against evidence. These pages cover the processes that come up most often, explained from the sources rather than paraphrased.
Start here
-
Photosynthesis
Biological process to convert light into chemical energy
Photosynthesis is a system of biological processes by which photopigment-bearing autotrophic organisms, such as most plants, algae and cyanobacteria, convert light energy—typically from sunlight—into the chemical energy necessary to fuel their metabolism. The …
-
Quantum mechanics
Description of physical properties at the atomic and subatomic scale
Quantum mechanics, also known as quantum physics, is the fundamental physical theory that describes the behavior of matter and of light; the behaviors it models typically occur at and below the scale of atoms, and have often been described as counterintuitive.…
-
Evolution
Change in the heritable traits of populations
Evolution is the change in the heritable characteristics of biological populations over successive generations. It happens when individuals in a population vary in their genetic characteristics and in the numbers of their surviving offspring. Mutation introduc…
-
DNA
Molecule that carries genetic information
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viru…
Questions in this topic
Related topics
- Health and medicine — How the body works, what illness is, and what the evidence says.
- Space and astronomy — Missions, planets, stars and the physics of everything beyond the atmosphere.
Where this comes from
Every page here is built from published text on en.wikipedia.org and from the open research services listed on the sources page. Nothing is written by a model, and every claim links to the page it came from.