Jun. 10—If you think you've been seeing an invasion of helicopters this year, you're not imagining things. Southern Minnesota maple trees are producing a copious amount of seeds that flutter from ...
Winged seeds called samaras grow on maple trees. These are seeds from the Japanese maple, _Acer palmatum_. AlessandroZocc/iStock via Getty Images Plus When wind or other disturbances detach winged ...
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Andrew Dickerson, University of Tennessee (THE CONVERSATION) When wind or other ...