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Shape Forest

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Speed limit for birds (MIT)

The northern goshawk is one of nature’s diehard thrill-seekers. The formidable
raptor preys on birds and small mammals, speeding through tree canopies and
underbrush to catch its quarry. With reflexes that rival a fighter pilot’s,
the goshawk zips through a forest at high speeds, constantly adjusting its
flight path to keep from colliding with trees and other obstacles.

While speed is a goshawk’s greatest asset, researchers at MIT say the bird
must observe a theoretical speed limit if it wants to avoid a crash. The
researchers found that, given a certain density of obstacles, there exists a
speed below which a bird — and any other flying object — has a fair chance of
flying collision-free. Any faster, and a bird or aircraft is sure to smack
into something, no matter how much information it has about its environment. A
paper detailing the results has been accepted to the IEEE Conference on
Robotics and Automation.

* Video: Watch a hawk fly through a dense forest

These findings may not be news to the avian world, but Emilio Frazzoli, an
associate professor of aeronautics and astronautics at MIT, says knowing how
fast to fly can ...

MIT

What happened to those koala bear cookie like things flavored chocolate and strawberry from the 80s?

they came packaged in a metal foil wrap then cased in an cardboard octagon shaped forest background package. they were so good. I think they had a filling in the middle of the chocolate or strawberry and had a chocolate like drawing of a koala on one side. I was just a preschooler but I never forgot them.

i can still see them in supermarkets here in china. want some?^^