There are many theories about how life began. There is the biblical story of Adam and Eve, Darwin’s five theories of evolution, common descent, gradualism, multiplication of species, and natural ...

We have only one example of biology forming in the universe—life on Earth. But what if life can form in other ways? How do you look for alien life when you don’t know what alien life might look like?

(CN) — Evidence of fresh water deep inside Earth has thrown a wrench in scientists' longstanding theory of a salty, ocean-smothered Earth existing four billion years ago. Fresh water, which is ...

Building blocks can be assembled much like lego to create molecules of life. Credit: Dr Anna Tanczos, Sci - Comm Studios., CC BY-SA Building blocks can be assembled much like lego to create molecules ...