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Last Updated Thursday June 22 2017 11:50 PM IST

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Birds can sleep when they fly

Researchers found that frigate birds sleep in flight with either one cerebral hemisphere at a time or both hemispheres simultaneously.

How Kerala is keeping its sunny side up

Even as another major hydro-power project would be too costly for the state in terms of money and ecology, the sun offers solace for the Keralite whose power consumption is set to only increase in the coming years.

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