Growing levels of air pollution from power plants and automobiles have reduced the potency of flower fragrances by up to 90 percent as compared with pre-industrial levels in the United States, a new study has found.
The trend is unpleasant for human noses, but may be life-threatening for pollinators such as bees and butterflies.
Scentless Spring: Auto Pollution and Flowers
Growing levels of air pollution from power plants and automobiles have reduced the potency of flower fragrances by up to 90 percent as compared with pre-industrial levels in the United States, a new study has found.
The trend is unpleasant for human noses, but may be life-threatening for pollinators such as bees and butterflies.
