New study shows how trees clean the air in London

New research by scientists at the University of Southampton has shown how London's trees can improve air quality by filtering out pollution particulates, which are damaging to human health.

Plant a tree: Milan's ambitious plans to be cleaner, greener

If Italy's fashion capital has a predominant color, it is gray—not only because of the blocks of neoclassical stone buildings for which the city is celebrated, but also due to its often-gray sky, which traps pollution.

Landscaping for drought: We're doing it wrong

Despite recent, torrential rains, most of Southern California remains in a drought. Accordingly, many residents plant trees prized for drought tolerance, but a new UC Riverside-led study shows that these trees lose this tolerance ...

Lack of water is key stressor for urban trees

A study out March 13 finds that urban trees can survive increased heat and insect pests fairly well - unless they are thirsty. Insufficient water not only harms trees, but allows other problems to have an outsized effect ...

Never-before-seen bacterium found at Arnold Arboretum

Researchers have discovered new life—a never-before-seen bacterium—in a novel environment, one created by humans and spreading rapidly around the globe, at Harvard University's Arnold Arboretum.

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