Our prehistoric Earth, bombarded with asteroids, rife with bubbling geothermal pools, may not seem hospitable to humankind today. But somewhere in this pre-life world, the right chemicals came together in the precise sequence necessary to form our essential building blocks. How? For decades, scientists have attempted to create miniature replicas of infant Earth in the lab. There, they hunt for the chemical pathways that led to life on Earth.Link to full Harvard University release on study led by Harvard/MGH investigator Jack Szostak.