A Little Air Pollution Boosts Vegetation’s Carbon Uptake / Science News

A Little Air Pollution Boosts Vegetation’s Carbon Uptake / Science News:

"‘Surprisingly, the effects of atmospheric pollution seem to have enhanced global plant productivity by as much as 25 percent from 1960 to 1999,’ Mercado notes."

(See also the Nova episode on global dimming.)

This begs a rank-amateur question: are plants with needle-shaped leaves adapted for clear atmospheric conditions?