Compared to previous theories, the current research emphasizes the complexity of the biological and chemical processes that brought about life.

Growing tissues can crack, break, and dissociate to form structures that can later withstand immense forces.

For much of modern biology, scientists argued that viruses are not alive, pointing to a basic limitation: they cannot make proteins on their own and must depend entirely on the cells they infect for ...

A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.