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 ...

Helicopter seeds, also known as samara fruits, are winged seeds that glide through the air to disperse over a wide area. Found on various trees, these seeds delight nature enthusiasts with their ...

When wind or other disturbances detach winged maple seeds called samaras from their parent tree, they spin through the air—and can even spin when it's raining. Impacts by high-speed raindrops only ...

PASADENA, Calif.—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 can be carried aloft by the wind and ...

A sidewalk covered in green seed pods. - Michael Vi/Shutterstock You may have noticed an uptick in falling seeds from your trees this year, and that's no coincidence. While it feels like trees ...

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 ...