Tree

Although the chemistry of autumn colours is well understood, there is an ongoing debate among scientists about why trees evolved their vivid autumn colours in the first place.

Grown using the Miyawaki method, fast-growing miniature forests in the middle of cities can bring surprisingly big benefits for people and the environment.

The US' Basque immigrants turned to sheepherding in order to survive. Today, their legacy can be found in unique wooden tree carvings they left throughout the American West.

By simulating the future atmosphere, scientists hope to understand whether trees will continue to act as the lungs of the planet.

Roberto Brito learned how to use a chainsaw at the age of 11. Now he uses his intimate knowledge of the Amazon rainforest to guide tourists around in his flip-flops.

As awareness grows of the toll noise has on children's health and learning, some cities show the way to quieter roads and classrooms.

A forest in Ecuador is buzzing with life, thanks to a global movement granting nature legal rights

Trees protect health and lower bills: planting them in tree-poor communities of colour has the greatest impact.