This is related to tree deaths, so I'm posting it here.
"Triangular, purple kite-like contraptions placed in trees across the country are helping state and
federal agriculture officials learn more about a deadly beetle that has killed tens of millions of ash trees in the United States
and Canada and threatens countless more.
The 61,500 traps installed in 48 states are part of a survey led and funded by the U.S. Department of Agriculture to
track the emerald ash borer, a species native to China and eastern Asia that was first detected in the U.S. in 2002.
The invasive pest likely arrived inside wood packing material from Asia and has since been detected in 15 states through the national survey using the purple traps that has been done annually since 2008.
Currently the USDA has quarantined West Virginia, Pennsylvania, Indiana, Illinois and the lower peninsula of
Michigan.
Certain areas of other states, like Virginia, also have quarantines, which means that ash trees, logs or nursery trees
cannot be transported out of that specific area."
http://www.huffingto....html?ref=green