LUCA, short for Last Universal Common Ancestor, is believed to be the single-celled organism from which all life on Earth descended. Estimated to have existed around 4.2 billion years ago, LUCA is ...

The exoplanet K2-18b could harbor a massive ocean, but scientists will need to study the planet more to see if it’s really ...

Scientists just discovered a new phylum of microbes in Earth’s Critical Zone. The Critical Zone—also known as the planet’s ...

And it turns out, according to a recent study, that the prehistoric Earth may have been home to a fourth kind of organism which no longer exists ... name prototaxite means “first yew.” Still, its ...

Scientists have debated where Prototaxites belong in the tree of life for over a century, but now a new study suggests it might represent a whole new branch.

Shu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, California 92093, United States Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, ...