PHOTO Jenna Park Winged “helicopter seeds” are more than a beloved feature of maple trees. These airborne wonders—also known as samaras—twirl to the ground, mimicking the motion of helicopter blades, ...
When a helicopter loses power, it doesn’t fall like a brick—it autorotates. Just like a maple seed. From engine-less gyro boats to WWII U-boat rotor kites, this episode unpacks how autorotation really ...
Smithsonian Gardens unveils two revitalized green spaces that educate and inspire. Abigail Pocasangre & Julia Ross Smithsonian horticulturists Sarah Dickert (left) and Stephen Mann (right) tend to the ...
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