Earth may have had all the elements needed for life within it all along − contrary to theories that these elements came from meteorites
- Written by Shichun Huang, Associate Professor of Earth and Planetary Sciences, University of Tennessee
Scientists still debate the origins of Earth's life-sustaining elements.BlackJack3D/E+ via Getty ImagesFor many years, scientists have predicted that many of the elements that are crucial ingredients for life, like sulfur and nitrogen, first came to Earth when asteroid-type objects carrying them crashed into our planet’s surface.
But new...

