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Narwhal Tusk Mysteries Unveiled 
Insights into how the charismatic cetaceans, narwhals, might employ their prominent tusks have been few, until recently. As the Smithsonian recounts, drones have allowed scientists to observe the sensitive creatures without disturbing them, leading to unprecedented views of narwhal behavior: http://www.smithsonianmag.com/smart-news/why-do-narwhals-have-tusks-drone-footage-confirms-one-theory-180963320/ 

Free Art, Courtesy of the Guggenheim 
While it may be a bit afield of our usual paddling-related pursuits, paddlers are nothing if not cultured, right? So, the skinny is that the Guggenheim is making 200 art books available for digital download. The Smithsonian has the details: http://www.smithsonianmag.com/smart-news/download-200-free-art-books-courtesy-guggenheim-180963266/