The story connects this lowly fungus to climate change - the harvest is down significantly, so prices are soaring. It also mentions that spores from imported Chinese truffles have infected some of the truffle sites in Europe - invasive species! I showed the clip to my classes with this document of guiding questions (download it below). They put it all together pretty quickly.
This is a Google Earth map layer of the towns in Maine with official reports of invasive hemlock woolly adelgid. Data are from the Maine Forest Service (http://www.maine.gov/doc/mfs/HWAOverview.htm). Please note that the map markers are placed on the town name, and not on the exact location of the HWA infestations.
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