News tagged with trees

Moroccan city outlaws olive trees

A Moroccan city has banned olive trees because of pollen-linked allergies and set an end-of-the-year deadline for residents to remove them, media reports said Thursday.

Sep 18, 2014
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Tree rings and arroyos

A new GSA Bulletin study uses tree rings to document arroyo evolution along the lower Rio Puerco and Chaco Wash in northern New Mexico, USA. By determining burial dates in tree rings from salt cedar and wi ...

Sep 18, 2014
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Urbanization is good for pests, bad for trees

My wife is from a neighborhood outside Baltimore called Lawyers Hill. This is where, in the 18th century, lawyers (and I assume doctors and other gentlemen) had country houses and could escape the summer ...

Aug 25, 2014
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Phloem production in Huanglongbing-affected citrus trees

Citrus Huanglongbing (citrus greening disease) is highly destructive and fast-spreading, contributing to a reduction in crop yields in Florida and threatening the future of the citrus industry worldwide. Once infected, trees ...

Mar 26, 2014
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Gum arabic under an electron microscope (w/ Video)

This alien glob in the video below is a piece of gum arabic from the hardened sap of the Acacia tree, most likely collected from a tree in Sudan. Rox Middleton explains how the electron microscope has changed the way we are ...

Jul 01, 2014
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