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
LifePredators may make prey get smart and grow more brain cells Predators are a problem for Trinidad’s killifish: in streams where the problem is worst the killifish grow more brain cells, perhaps to help evade the hunters News