New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

To account for the numerous gaps in the fossil record, they treated the parts of the world where fossils have not been uncovered as missing information rather than designating them areas where no ...

Certain birds that gave rise to today’s ducks and geese found sanctuary in Antarctica during a mass extinction event 66 ...

detailing a crucial chapter in Earth’s early history. In the study, the researchers sought to understand what led to Earth and Mars containing significantly fewer MVEs than chondrites, which are ...