With all the advances in science in the last century, why are there still so many infectious diseases? Why haven't we found cures for difficult cancers? Why hasn't any major headway been made in the treatment of mental illness? Why did 36 million people die of hunger in 2019? How do we expect to feed the additional two to three billion people expected by 2050? And how do we intend to stop, and not only that but reverse, global warming and the climate crisis? In Saved by Science, scientist Mark Poznansky examines the many crises facing humanity while encouraging us with the promise of an emerging solution: synthetic biology.