A green Oregon Oak covered in moss with many branches

What is Old Growth, and Why It Matters

Old growth forests are often famed for their beauty, cultural and historical significance. But there's more to old growth than just the age of the trees.
Roots and leaves

Why the Belowground Ecosystem Matters

Trees get all the credit. But for biodiversity, look down, too.
Oak tree

What Does a Tree See?

A hundred-year-old red oak in a Massachusetts forest told a writer and a team of scientists secrets about change over time.
Cattle in a forest

Silvopasture; Or, Why Are There Cows in the Woods?

Cattle grazing on invasive plants in longleaf pine forests could benefit ecosystems and farmers alike.
A dead tree in a forest

What Happens to a Tree When It Dies?

Decomposing trees on the forest floor become "dead wood"—a part of ecosystems that researchers are only beginning to understand.
Crown shyness

The Mysteries of Crown Shyness

In some forests, trees grow in a manner that keeps their branches from touching one another. Despite decades of study, scientists aren't exactly sure why.
Severely burnt forest after Grampians wildfire

How Eucalyptus Trees Stoke Wildfires

Eucalypts are now cosmopolitan, spread around the world through imperialism and globalization. Unfortunately, they're also highly flammable.
acorn lyme disease connection

Can the Acorn Crop Predict Lyme Disease?

Will cutting fewer forests, where tick hosts and their predators live, help curb Lyme disease? Scientists debate.
Costa Rican rainforest

A Clever Way to Conserve Forests

As climate change looms, scientists seek ways to reduce the release of carbon. Sometimes a low-tech approach is overlooked: conserving forests.
Restoration of an American mastodon herd by Charles R. Knight

This Week in Sustainability: From Ice Age to Internet Age, Scientists Look for Clues to Species’ Extinctions

Scientists explore the causes--climate change, habitat destruction, and more--that decimated animals and humans alike, from Ice Age to Internet Age.