6 results for “origin of life”
Life & Biology
The Origin of Life
Around four billion years ago, on a hot young planet, chemistry became biology. Nobody knows exactly
Article · 4 min read
Chemistry
The Chemistry of Life
uses the same molecules is powerful evidence that all life on Earth shares a common origin.
Article · 3 min read
Space & the Universe
The Life of a Star
life fusing hydrogen in its core. Astronomers call this the main sequence. How long it lasts depends on mass, and in a way that surprises most people: heavier stars die younger
Article · 3 min read
Planet Earth
Rocks, Minerals and Fossils
life turned to stone Occasionally something living is buried before it rots. The soft parts decay, but bones, shells and teeth can be mineralised, their pores filled with dissolved stone until
Article · 4 min read
The Human Body
The Skeleton and Bones
original shape until, often, no trace of the break remains. A child's broken arm heals in about a month, an adult's in two or three. Bone
Article · 5 min read
Planets & the Solar System
Comets, Asteroids and Pluto
original building material. The planets did not use up all the material in the cloud that formed the solar system. Billions of smaller bodies were left over, too few or too scattered
Article · 4 min read
