Bats have been implicated in deadly epidemics such as COVID-19 and Ebola, yet scientists are discovering evidence that they may hold the key to a longer and healthier life. From caves in Thailand and Texas to labs around the globe, NOVA meets the scientists decoding the superpowers of the bat.

Outnumbering atoms a billion to one, neutrinos are the universe's most common yet most elusive and baffling particle. NOVA joins an international team of neutrino hunters as they try to capture an elusive fourth form of neutrino. Their results may force scientists to redraw their blueprint of the subatomic world, the Standard Model of physics, and change our understanding of how the universe works.