Buying a real Christmas tree is a good thing: expert

The question of whether it is environmentally correct to buy a real Christmas tree has been asked repeatedly in recent years, and an expert in Penn State's College of Agricultural Sciences wants to lay it to rest permanently.

Study explores effects of herbicide drift on white oak

Herbicide drift, which occurs when pesticides "drift" from the targeted application area to a nearby non-targeted area, is a particular concern in Midwestern regions of the United States. In the Midwest, where the topography ...

Danger lurks underground for oak seedlings

Scientists trying to understand why oaks are starting to disappear from North American forests may need to look just below the surface to find some answers.

Sequence matters in droughts and floods

When extremes of drought and flood come in rapid succession, the extent of damage to vegetation may depend in part on the sequence of those events, according to a new study published in The American Naturalist.

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