‘Nova’ delivers stories from the front lines of science

“Nova” explores new discoveries and how we have come this far. Except where otherwise noted, all times below are Wednesdays at 8 p.m. on Arizona PBS.

June 17: “Australia’s First Four Billion Years: Awakening”

No continent preserves a more spectacular story of its origins than Australia, form the birth of the earth to the emergence of the world we know today. Watch online.

June 24: “Australia’s First Four Billion Years: Life Explodes”

Australian fossils offer clues to how life stormed the beaches to dominate planet Earth. Watch online.

July 1: “Australia’s First Four Billion Years: Monsters”

Meet the reptilian rulers of prehistoric Australia – some of the largest and most dangerous ever to walk the Earth. In the desert heat, scientists unearth an ancient inland ocean, full of sea monsters. Watch online.

July 8: “Australia’s First Four Billion Years: Strange Creatures”

After the asteroid impact 65 million years ago, Australia was set adrift in the southern seas. Australia’s many unusual creatures, like the kangaroo and the cassowary, tell a tale of isolation, change and resilience. Explore this walkabout continent with host Richard Smith to uncover how it became the unique island it is today. Watch online.

July 15: “Making North America: Origins”

See the epic 3-billion-year story of how our continent came to be. From palm trees that once flourished in Alaska to huge eruptions that nearly tore the Midwest in two, discover how forces of almost unimaginable power gave birth to North America. Watch online.

July 22: “Making North America: Life”

Discover the surprisingly intertwined story of life and landscape in North America, from early life to iconic dinosaurs to giant marine reptiles swimming in an ancient sea that once split the continent in two. Watch online.

July 29: “Making North America: Human”

From Ice Age to oil boom, discover the challenges faced and the wealth uncovered as humans take over the continent. How did we turn rocks into riches? And what catastrophic natural disasters could threaten the civilization we’ve built? Watch online.

August 5:”Rise of the Mammals”

Sixty-six million years ago, an asteroid wiped out the dinosaurs in a fiery global catastrophe. An amazing new trove of fossils reveals how mammals took over, ultimately evolving into the huge array of species, including us, that rule Earth today.

August 12:”Decoding the Great Pyramid”

Stunning new archaeological evidence provides clues about how the Egyptians who built the Great Pyramid of Giza — and how they did it. Join researchers as they delve into the logbook of a work crew and discover how the massive project transformed Egypt.

August 19 at 9 p.m.: “Inside Animal Minds: Dogs & Super Senses”

What would it be like to go inside the mind of an animal? We have all gazed into a creature’s eyes and wondered: what is it thinking about? What does it really know? Now, the revolutionary science of animal cognition is revealing hard evidence about how animals understand the world around them, uncovering their remarkable problem-solving abilities and exploring the complexity of their powers of communication and even their emotions.

August 26 at 9 p.m.: “Inside Animal Minds: Who’s the Smartest?”

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