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The Indus River Dolphin: A Redefined Species
4:33
For years, many have raised a question about whether river dolphins in South Asia—which live on either side of Indian sub-continent—are the same species or different species. New analysis by an international team has answered this once and for all.
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Size Matters: Examining the Effects of Body Size on Birth Rates in North Atlantic Right Whales
4:59
Recent research reveals that smaller female North Atlantic right whales produce fewer calves over their reproductive years. Their body size has been declining in recent decades due to increased entanglements in fishing gear and other factors.
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Species in the Spotlight: Sacramento River Winter-Run Chinook
5:00
The Sacramento River system is home to the only winter-run Chinook salmon in the world. This unique population is cut off from its historical spawning and rearing habitat, and faces many other threats, but efforts are underway to help it recover.
