Where Is Everybody?

Rebecca Boyle | Quanta
Mar 13, 2019
Nature | Cosmos

Star motions should make it easy for civilizations to spread across the galaxy, but still we might find ourselves alone.

A New Genetic Alphabet

Carl Zimmer | New York Times
Mar 12, 2019
Nature | Life

DNA is spelled out with four letters, or bases. Researchers have now built a system with eight.