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Venice has been charmed by a recent visitor: An acrobatic, wild dolphin. The dolphin nicknamed Mimmo has been delighting tourists and Venetians for months with his acrobatic flips. Experts are now eager to move him into open water, especially after verifying wounds indicating that the dolphin had been likely hit by a boat propeller.

Saturn's giant moon Titan may not have a vast underground ocean after all. Titan instead may hold deep layers of ice and slush more akin to Earth’s polar seas, with pockets of melted water where life could possibly survive and even thrive, scientists reported Wednesday. The team led by researchers at NASA's Jet Propulsion Laboratory challenged the decade-long assumption of a buried global ocean at Titan after taking a fresh look at observations made years ago by NASA’s Cassini spacecraft aroun