In 2002, an invasive insect slipped into Michigan in wood-packing crates: The emerald ash borer has since killed tens of millions of American ash trees
An invasive insect, the emerald ash borer, was discovered in Michigan during the summer of 2002. The invasive insect, believed to have arrived in solid wood packaging material used in international trade, has since killed tens of millions of ash trees. Its larvae bore beneath the bark, disrupting the tree's water and nutrient transport systems. International trade standards now aim to prevent similar introductions of destructive pests.
An invasive insect, the emerald ash borer, was discovered in Michigan during the summer of 2002. The invasive insect, believed to have arrived in solid wood packaging material used in international trade, has since killed tens of millions of ash trees. Its larvae bore beneath the bark, disrupting the tree's water and nutrient transport systems. International trade standards now aim to prevent similar introductions of destructive pests.
