Sarah Holt

Investigate how an asteroid vanquished the dinosaurs 66 million years ago. Join scientists as they drill into the impact crater and, for the first time, reconstruct the hell on earth that unfolded in the minutes, hours, and months after the impact.

Looks at the health benefits and risks of cannabis. Examines the history of cannabis in the United States, including the stigma that continues to promote challenges to its legalization.

"America is in the midst of the deadliest drug epidemic in US history. In 2017 alone, around 70,000 Americans died from drug overdoses, driven by a dramatic rise in the abuse of opioids like OxyContin, heroin, and fentanyl. It's a slow-motion disaster that is destroying whole communities, with no end in sight. As our nation looks for answers, take an unflinching look at the epidemic through the eyes of those living through it. Along the way, join...

Origami, the century old tradition of paper folding is now at the heart of a scientific revolution. Scientists are discovering that folding is a powerful tool to explore the limits of science. Engineers and designers are now adopting origami designs to conquer space or reshape the world around us. From aircraft design to protein folding to micro-robots, join NOVA to discover how the age-old art of origami is transforming our world.