LifeFirst self-replicating molecules may have had just two ingredients A mixture of two carbon-based chemicals can spontaneously form molecules that can copy themselves, hinting at how life may have begun on Earth News
LifeExtinction is a fact of life. Could we stop it – or even reverse it? The fossil record tells us extinctions happen all the time. The question is what part we play – and whether we could ever bring back creatures like the dinosaurs Features