Saturday Citations: A virus that makes its own proteins; a new Spinosaurus; exercise beats anxiety

This week in the scientific process: researchers reported the first-ever shark sighted in Antarctic waters. Penguins beware!
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'Universal' nasal-spray vaccine protects against viruses, bacteria and allergens in mice

In an early animal test, a new nasal-spray vaccine has shown promise against a variety of germs and a common allergen, scientists report.