Drowning in Plastic

In January 2022, one of the most powerful volcanic eruptions in recorded history rocked the Pacific islands of Tonga, sending shockwaves around the world. Through first-person accounts of the disaster and eyewitness footage, experience the terrifying power of the eruption and the devastating tsunami that struck the shores of Tonga. Why was this eruption so big, how did it cause the tsunami, and could another disaster loom? NOVA investigates on "Hidden Volcano Abyss."

From colossal farms in America to the destruction of the Amazon, is our hunger for meat killing our planet?

Rising sea levels and sinking land threaten to destroy Venice. Leading scientists and engineers battling the forces of nature to try to save this historic city for future generations. Discover the innovative projects and feats of engineering currently underway, including a hi-tech flood barrier, eco-projects to conserve the lagoon, and new efforts to investigate erosion beneath the city.

Chris Hemsworth takes on epic challenges to reveal ways we can all live better today.

Over 7,000 incredible islands, bursting with unique natural wonders. Liz Bonnin shares the sights that ignited her passion for nature and discovers the Caribbean's untamed heart.