Science Ecology

Sloths are the slowest mammals on earth. They can hardly see. They live in rainforests among jaguars, pumas, and countless other predators. Yet they survive. And they do it by being so incredibly slow, and living a life covered in algae. In this episode, we hang with a sloth in the jungle of Costa Rica as he spends a month digesting one single leaf, and we see the symbiosis and collaboration that surrounds him.

Humpback whales are among the most intelligent animals on Earth. Some scientists believe they might even surpass humans in self-awareness, empathy, and communication skills. In this episode, we swim with a whale as he teams up with other humpbacks to use bubbles to catch fish, rescues a sea lion, and puts his own spin on melodies sung by whales across the Pacific Ocean. This is the world in its natural state, defined by seasons, routines, and cycles. By the time this whale is ready to close one eye and go to sleep, you will be too.

At the southernmost tip of South Africa, where fresh and salt water collide, a tiny seahorse appears to levitate. Seahorses are the ocean’s slowest swimmers, but they have one of the world’s fastest muscle contractions, using it to suction up their prey. In this episode, we meander through eelgrass with a male Knysna seahorse as he twines tails with his partner, changes color to match the sand, and even gives birth to a brood of tiny seahorses.

Elephants are the largest land animals in the world. They are also intensely social and have advanced long-term memories. In this episode, a parade of Asian elephants makes its way through the Sri Lankan forest to a lake for drinks and mud baths, stopping periodically for group naps. The female leading the parade uses infrasonic rumbles—inaudible to humans, but traveling as far as two miles along the surface of the Earth as seismic waves—to invite friends and family around the forest to join her at the reservoir.

Timothy Morton argues that ecological awareness in the present Anthropocene era takes the form of a strange loop or Möbius strip, twisted to have only one side. Deckard travels this oedipal path in Blade Runner when he learns that he might be the enemy he has been ordered to pursue. Ecological awareness takes this shape because ecological phenomena have a loop form that is also fundamental to the structure of how things are.

North Ronaldsay sheep have been roaming the shores of a Scottish isle for centuries. They outnumber people there by more than twenty to one. While most sheep graze in fields, the North Ronaldsay are a breed apart: they forage seaweed on the rocky beach. In this episode, we follow a lamb as she crosses the island’s ancient stone dyke and sees the ocean for the first time.

The sun sinks over the Rio Grande, the mountains around it glow orange, and the world slows down. The Mexican free-tailed bats inside the Jornada Cave are just starting to stretch and murmur. In this episode, we visit the nursery where all the baby bats stay together, and we accompany a new mother as she journeys into the sky with the rest of her crew for a night of hunting bugs via echolocation.

Red pandas have thick bushy ringed tails like raccoons, but they aren’t related to panda bears or raccoons—in fact, they have no close relatives anywhere on Earth. In this episode, we wander the Himalayas with a red panda and her cubs as they munch on bamboo, practice walking in the treetops, and settle in to nap together as the first snowfall of the year covers their forest home.

In the misty Puerto Rican El Yunque rainforest, coquí frogs no larger than your thumb fill the air with their distinctive two-note song: “co-quí, co-quí.” They alternate routines—one night singing to attract potential mates, the next hunting to fuel up for tomorrow’s performance. In this episode, we follow a singer and a hunter amid the vibrant nighttime chorus.

Fennec foxes’ ears can be up to half as long as their bodies. They use them to track movement across the Sahara Desert, including under the sand. In this episode, we follow a fox as he meanders home to his family through the sand dunes as they slowly shift with the wind.

Ten thousand years after humans figured out how to stop wandering and plant crops, veteran investigative journalist Mark Schapiro plunges into the struggle already underway for control of seeds, the ground-zero ingredient for our food. Three-quarters of the seed varieties on Earth in 1900 had become extinct by 2015. In Seeds of Resistance, Schapiro takes us onto the frontlines of a struggle over the seeds that remain, one that will determine the long-term security of our food supply in the face of unprecedented climate volatility. More than half of all commercially-traded seeds have fallen under the control of just three multinational agri-chemical companies....

California’s coast redwoods are Earth's tallest living beings, some reaching more than 350 feet high. They can also live for more than 2,000 years, outlasting entire civilizations. In this episode, we spend an evening with an ancient tree. Below ground, its roots tap into a forest-wide network; above ground, its branches harbor life in its many forms.

Brown bears lead deeply cyclical lives. They need to gain sometimes hundreds of pounds during the warmer months to prepare for winter hibernation, a lifestyle that brings them into frequent contact with many other species’ cycles. In this episode, we meander through the Alaska peninsula with a bear and her cubs as she teaches them to hunt salmon at the falls, dig for clams along the coastal mudflats, and use the regional rubbing tree.

Platypuses are mammals unlike any other on earth. They lay eggs, ooze milk through their skin, and can sense electricity. In this episode, we travel with a platypus as he moves through his nightly routine on the island of Tasmania. He uses electroreceptors to hunt underwater and does a synchronized swimming courtship ritual with his mate, who then digs a burrow 40 feet deep into the riverbank to nest.

Crows have long been the subject of folklore, likely because they’re strikingly similar to humans, leading lives rich in personality, intelligence, and relationships. In this episode, we fly the streets of Seattle with a crow as she grooms her mate, delivers what appears to be a gift, and finally commutes miles away from her territory to gather and chat with thousands of other crows before it’s time to roost for the night.

Dogs are a familiar and comforting part of many of our lives. In this episode, we take a walk with a pet xoloitzcuintli, or Mexican hairless dog, as he greets his blocks by smell. Along the way, we learn the backstory of squirrels in U.S. cities and observe the very smart and clean neighborhood raccoon.

Dung beetles might sound dirty, but the ancient Egyptians believed their god took the form of a dung beetle to roll the morning sun across the sky every day. In this episode, we roll with dung beetles around the world as they push their precious dung—often in balls many times larger than they are—over Florida pastures, Armenian highlands, and the vast South African savanna.

Where has our planet come from, and what lies beneath its surface? How have we come to understand its past and present environments, and what does its future look like? Thanks to scientists who study its rocks, fossils, and landscapes, we know that Earth history spans over four and a half billion years. But there is still much more to discover.

A lyrical exploration of the world’s wildest, most forbiddingly remote places—and the humans who have always been there, by “the best non-fiction writer of her generation,” according to The Times From the blacksand beaches of Iceland, to river crossings deep in the Amazon jungle, to the...

Janisse Ray grew up in a junkyard along US Highway 1, hidden from Florida-bound vacationers by the hedge at the edge of the road and by hulks of old cars and stacks of blown-out tires. Ecology of a Cracker Childhood tells how a childhood spent in rural isolation and steeped in religious fundamentalism grew into a passion to save the almost vanished longleaf pine ecosystem that once covered the South.