The genetic code acts as life's instruction manual, telling cells how to build proteins from DNA and RNA. Though it's a marvel of molecular precision, the path it took to evolve remains unclear. Fresh ...

The genetic code is the recipe for life, and provides the instructions for how to make proteins, generally using just 20 amino acids. But certain groups of microbes have an expanded genetic code, in ...

An illustration of E. coli. Scientists have been racing to shrink the genetic code of this bacterium. Kateryna Kon / Science Photo Library via Getty Images The DNA of nearly all life on Earth is made ...

I wonder if the pre-LUCA ribosome itself might have been radically different before we fixed on 20 amino acids? Obviously the protein scaffolding would be different, but also it could afford to be a ...