Every generation grows up hearing a certain set of rules about how life is supposed to work. Some of that advice comes from love. Some of it comes from hard-earned experience. And much of it is passed down because it worked — or seemed to work — in a very different time.
But the world…
New research challenges long-held assumptions about amino acid evolution — and could reshape the search for life beyond Earth.
The Building Blocks Were There Before Life Was
For decades, scientists believed they had a reasonably firm grasp on the sequence of events that gave rise to life on Earth — a tidy origin story involving…

