Identify the differences between two similar photos.
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From an "awkward" smiling frog to embarrassing owl parents, this year's winners of the entertaining annual competition won't let you down
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Only seven spade-toothed whales have ever been identified, and the species has never been seen alive. After one washed ashore last summer, researchers have made new discoveries—including that the animal had nine stomach chambers and vestigial teeth
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The familiar rodents, known for eating nuts and seeds, have been spotted hunting and decapitating voles in a gruesome dietary adaptation. Scientists say it might signal resiliency in face of future environmental pressures
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Although it was just a byproduct of developing a new type of reactor, the generation of electricity from nuclear energy signaled a bright future ahead
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Discovered in central Germany, the 1,800-year-old silver artifact held a tiny scroll, which researchers have now deciphered using high-resolution scans
