The coldest and largest of the Great Lakes has been experiencing steady increases in average temperatures for a few decades, enough to give rise to concern for the lake ecosystem, the weather patterns in the surrounding area, and more.

Explore the phenomenon of whitefish population decline in the Jordan River by Green Bay, Wisconsin.

Creative writing, math, fitness, art, career exploration, and more for 6th-8th graders.

Crisscross the globe to spotlight the changemakers who are restoring and protecting the natural world.

Architects, restaurateurs, high school students, and scientists are joining forces to bring back a creature that fits in the palm of a hand: the oyster.

Beavers are back in Britain—charming many Britons, perturbing others, and all the while stimulating a healthy debate about whether the island nation is ready to embrace a wilder future.

An improbable alliance is giving a special bird—the endangered red-cockaded woodpecker—a new lease on life.

Ecuador is the first country in the world to enshrine the “rights of nature” in its constitution—to establish that species other than humans have their own legal right to exist. And now this revolutionary concept is being put to the test.

Recovering salmon populations are reviving a “nutrient express” from the ocean to the forest.

After a long civil war that decimated Gorongosa’s wildlife, the Mozambique government and the U.S.-based Carr Foundation have worked for two decades to restore the park’s wildlife to nearly pre-war levels.

The axolotl lives in only one place outside captivity: the waters of Lake Xochimilco, in Mexico City. Now, a team of scientists is working to secure its future by looking to its past.

Dogs in Australia are partnering with people to save other species from grave threats to the island continent’s unique fauna.

Mary Reynolds of Ireland is building a movement to turn gardeners into guardians of the planet by returning our own patch of land to nature, and by restoring hope that individual action can create lasting change. 

As urban expansion quickly replaces natural habitats, façade engineer Alistair Law has discovered a new way to restore native ecosystems for pollinators and create natural spaces for us all within cities.

Coral reefs around the world are threatened by rising ocean temperatures, but hope is growing off the coast of Hawaii. There, researchers at the Coral Resilience Lab selectively breed corals to withstand ever-increasing amounts of heat stress.

For years, Derek Gow worked his 400-acres in western England as a conventional sheep and cattle farm. Now, he’s using his experience with British rewilding projects to return his land to what it once was: a healthy, biodiverse ecosystem.

All around the world, seabirds provide a critical link between land and sea. On Hawai’i, ecologists are working to protect two vital shearwater species that helped life first take hold across these islands.

Florida’s Crystal River has long been a safe haven for the Florida manatee, but when an invasive algae wiped out the eel grass that manatees need for food, the community rallied to restore the river and save the animals that call it home.

A local team is removing invasive predators, restoring habitats, and battling mosquito-borne diseases to protect honeycreepers from their latest threat: avian malaria.

Coral reefs around the world are threatened by rising ocean temperatures, but hope is growing off the coast of Hawaii. There, researchers at the Coral Resilience Lab selectively breed corals to withstand ever-increasing amounts of heat stress.

In the middle of Rio de Janeiro sits the world’s largest urban rainforest: Tijuca National park. To combat a century of deforestation and hunting, a team of researchers are repairing the forest’s forgotten web of life, one species at a time.

All around the world, seabirds provide a critical link between land and sea. On Hawai’i, ecologists are working to protect two vital shearwater species that helped life first take hold across these islands.

Using innovative technology and breakthrough genetics, researchers have ignited a cadre of solutions to save rare and cherished species of frogs.

A local team is removing invasive predators, restoring habitats, and battling mosquito-borne diseases to protect honeycreepers from their latest threat: avian malaria.

In the middle of Rio de Janeiro sits the world’s largest urban rainforest: Tijuca National park. To combat a century of deforestation and hunting, a team of researchers are repairing the forest’s forgotten web of life, one species at a time.

Using innovative technology and breakthrough genetics, researchers have ignited a cadre of solutions to save rare and cherished species of frogs.

A wildlife biologist puts an ambitious plan in motion to save two uniquely American reptiles — the eastern indigo snake and the gopher tortoise — and the longleaf pine forest they call home.

Three species of sea turtles nesting in southeast Florida face a range of manmade threats.

For years, Derek Gow worked his 400-acres in western England as a conventional sheep and cattle farm. Now, he’s using his experience with British rewilding projects to return his land to what it once was: a healthy, biodiverse ecosystem.

A wildlife biologist puts an ambitious plan in motion to save two uniquely American reptiles — the eastern indigo snake and the gopher tortoise — and the longleaf pine forest they call home.

Florida’s Crystal River has long been a safe haven for the Florida manatee, but when an invasive algae wiped out the eel grass that manatees need for food, the community rallied to restore the river and save the animals that call it home.

Three species of sea turtles nesting in southeast Florida face a range of manmade threats.

Astronomer/ Professor Dr. Kate Dellenbusch explains different ways to safely view a solar eclipse, the science behind why these methods work, and how to create a pinhole viewer.

The Hubble Telescope gives us a unique view of the universe. Learn the history of this famous telescope and what it has helped us discover.

Learn about the space shuttle that took astronauts to space for the first repair of the Hubble Space Telescope.

Check out these free Cyberchase games about money.

Learn about the characteristics of spring with The Cat in the Hat!

Elinor, Ari and Olive are in the park playing when their fun is cut short because it starts to rain. This makes Elinor wonder, “Why does it need to rain?”

In this clip from Ready Jet Go!, Sunspot helps Jet and his friends learn about the solar eclipse. A solar eclipse is when the sun's light becomes blocked by the moon.

Learn about animal classification with the Wild Kratts gang. Martin shows Koki how to identify birds of prey by their silhouettes in the sky.

Explore the phenomenon of shoreline erosion as students learn how bodies of water, like rivers, carve out the landscapes around them, moving and depositing sediment, supporting the aquatic ecosystem, and providing natural and man-made ways to interact with human activities and the environment.

Explore the phenomenon of the moose-wolf population dynamics on Isle Royale as students learn how one of our lesser-known national parks provides a firsthand opportunity to witness biology, ecology, and history in action.

Explore the phenomenon of natural gradients as students learn about how the natural flow of the Great Lakes landscape can provide a smooth path for mountain bike riding.

Explore the phenomenon of erosion as students learn about the diversity of rocks present in the Great Lakes.

Explore the phenomenon of corrosion as students learn about sunken ships in the Great Lakes and the glass-bottomed tour boats that take people to explore them.

Gain insights into the reality of food waste, research efforts in their local communities to combat it, and conduct an experiment to investigate the impact of food storage methods on food waste.

Watch documentaries and PBS classics from 8pm - 6am.

Explore the phenomenon of shipbreaking, including how the technique of breaking down freighters allows us to recycle the materials and parts of the ship for other uses.

Explore the phase changes associated with water going between the liquid and solid state in order to learn about the formation of ice that is climbable, the melt patterns of ice, and how salinity affects ice melting

Explore the phase changes associated with water going between the liquid and solid state in order to learn about the formation of ice that is climbable, the melt patterns of ice, and how salinity affects ice melting