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Air Date: Jan 07, 2017 12:00 AM ET
Hummingbird visual processing helps them with their unique hovering and darting flight style.
As It Happens
'They all have plastic inside them': New film explores our impact on Pacific albatrosses
The past is painful enough without targeted ads to remind you
Now or Never
Education and environment: Calgary's nature kindergarten gets kids playing and learning outside
Sloppy science creates worthless cures and wastes billions, says author