Nature

Geologist Marcia Bjornerud has a profound understanding of Earth's deep history. The author of "Timefulness," she says geologic literacy would give us a much healthier sense of time. 

Stephen Alvarez — a National Geographic photographer and founder of the Ancient Art Archive — has spent years documenting ancient rock art around the world. He takes Steve Paulson on a long hike in the Cumberland Plateau, where they find an "unnamed cave" with 2,000-year old engravings.

TTBOOK and CHN present Deep Time

Are you ready to think in centuries instead of seconds? Eons instead of hours? It’s time to throw away your watch and make thousand-year plans. And appreciate how Earth keeps time. 

An owl

For many birdwatchers, identifying bird calls, tracking rare breeds through marshes and waters, and watching our feathered friends is more than just a pastime — it's a calling.

A great horned owl

Jennifer Ackerman writes in her new book "What an Owl Knows: The New Science of the World’s Most Enigmatic Birds" about how owls are cryptic, hard to find, and difficult to understand. Speaking to Shannon Henry Kleiber, she said that’s part of the attraction.

women walking

After a health scare, Annabel Abbs promised herself she'd make a real effort to walk every day. She fell in love with walking, even began taking multi-week walking vacations. And then she discovered she wasn't the only one — there's a hidden history of great women walkers from the past. So she decided to tell their stories.

Desert at Dusk

Ethnobotanist Gary Paul Nabhan has been called the “father of the local food movement.” Many of his insights come from the farming practices of Indigenous people living near the U.S.-Mexico border, who’ve grown food in arid habitats for centuries.

glowing mushrooms

Mushrooms and other fungi are mind-bending. A fungal network can spread for miles, but genetically, it’s a single organism. As biologist Merlin Sheldrake says, “they are everywhere at once and nowhere in particular.”

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