Unmoving escalators, circumnavigating ash clouds and orange oranges
from Dr Karl Podcast Hosted by Australian Broadcasting Corporation
Why does it feel unusual when walking on a stationary escalator? Plus: why did the recent Chilean volcano ash cloud travel in the opposite direction to the prevailing winds? And why are oranges orange?
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This episode is 37 minutes long.
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This episode was published on July 7, 2011.
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