Add Yahoo as a preferred source to see more of our stories on Google. Jun. 10—If you think you've been seeing an invasion of helicopters this year, you're not imagining things. Southern Minnesota ...

Add Yahoo as a preferred source to see more of our stories on Google. Winged seeds called samaras grow on maple trees. These are seeds from the Japanese maple, _Acer palmatum_. AlessandroZocc/iStock ...

Watch the incredible transformation of a maple tree as it grows from seed to sapling in this 138-day time-lapse. Starting with the collection of samaras, the process covers seed preparation, ...

MINNEAPOLIS — Trees, yards and gardens are lush with all the rain recently. But some people wonder if the weather has also helped stop a pesky problem this time of year. Why are some maple trees not ...

You may have noticed lots of those helicopter maple tree seeds filling up rain gutters or piling up on the sidewalk this year. State Forester Tivon Feeley says the large amount of seeds created a ...

The twirling seeds of maple trees spin like miniature helicopters as they fall to the ground. Because the seeds descend slowly as they swirl, they're carried aloft by the wind and dispersed over great ...

What's wrong with the maple trees? They look dead, and their bare branches are covered in brownish "spinner" seeds instead of leaves. Worried homeowners across the state are calling their local OSU ...

While walking to my car, I noticed that the wind was full of some sort of seeds fluttering, whirling, and spinning to the ground. My car was covered with the small reddish and yellow seeds. They ...

Maple tree seeds and the spiraling pattern in which they glide to the ground have delighted children for ages and perplexed engineers for decades. Now aerospace engineering graduate students have ...

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 their ...