July 12, 2021

Tim Kovar imparts wisdom about tree climbing techniques and preservation to his students, who range from children to grown biologists.

November 25, 2019

With habitat loss already threatening koalas, the disease could increase death and infertility rates

January 25, 2017

Two sophisticated techniques could rescue the beloved American chestnut tree — but the riskier approach might work better

January 19, 2014

'Walking trees' guard the shores of Florida and thrive in the salty water


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