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Category:
Introduction
The atheist delusion
Agnosticism
Evolution
The limitations of science
Origins
The nature of a 'Creator'
Where is it now?
Endings
Identity
Animals
Humans
Religion
Art
Politics
What should be taught in schools?
A mad world
General
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> Flying low when they can, but flying over the Himalayas when they have to:-http://www.livescience.com/49470-roller-coaster-goose-flight.html?cmpid=558956-" The tracking data also showed that the birds flapped their wings more frequently at higher altitudes, where the air is less dense. But more important, a small increase in the wingbeat frequency was strongly correlated with a large increase in the heart rate. For example, a 5 percent increase in the wingbeat rate produced a 19 percent change in the birds' heart rate, Bishop said.-"This all suggests that as the birds increased their altitude, they had to flap their wings harder to generate the same amount of lift, and this used up a lot of energy. Thus, it makes more sense for the birds to swoop down to lower altitudes when the ground dips down, Bishop explained."
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