Britain scrambles to contain deadly ash tree disease

The British government convened its emergency crisis committee on Friday to discuss how to contain a fungal disease threatening ash trees that has already wiped out swathes of woodland in Denmark.

Salt seeds clouds in the Amazon rainforest

It's morning, deep in the Amazon jungle. In the still air innumerable leaves glisten with moisture, and fog drifts through the trees. As the sun rises, clouds appear and float across the forest canopy ... but where do they ...

How geckos cope with wet feet

Geckos are remarkable little creatures, clinging to almost any dry surface, and Alyssa Stark, from the University of Akron, USA, explains that they appear to be equally happy scampering through tropical rainforest canopies ...

A Tree Stands in the Sierra Nevada

White fir, ponderosa pine, Jeffrey pine. Sugar pine, incense cedar, red fir: These are conifers of the headwater ecosystems of California's Sierra Nevada.

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