Redwoods, like those pictured above, receive up to 40 percent of their yearly water supply from fog — a resource that may be under threat, a new study suggests. hide caption

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Courtesy of Jeremy Wilmer

An artist's rendering of the 70-million-year-old fish Bonnerichthys. This large bony fish got its dinner much like today's whales, by slurping in water and filtering out tiny sea creatures. Image courtesy of Robert Nicholls, hide caption

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These mutant nematode worm embryos are genetically identical, but fluorescence imaging shows they are not exactly the same. The pink spots are mRNA molecules involved in gut development. Some twins have spots and some don't, which means some will develop guts and others won't. Arjun Raj hide caption

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The golden mask of Tutankhamen is displayed at the Egyptian Museum in Cairo. New research suggests that the famous pharaoh suffered from numerous ailments, and probably spent much of his life in pain before dying at 19 from the combined effects of malaria and a broken leg. Amr Nabil/AP hide caption

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Dr. James Eckner tests the reaction time of one of the study's authors, Dr. James Richardson, using the method they developed. The stick is marked in centimeters and weighted down by a hockey puck. University of Michigan hide caption

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An artist's Impression of "Inuk," a 4,000-year-old human whose remains were found in Greenland. Scientists have sequenced most of his DNA using tufts of his hair found in the 1980s. Nuka Godfredsen hide caption

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