March 22 a less dense metal. Then they tested the metal by applying tension and found that it was stronger and less brittle than conventional steel.

“When leaders feel confident that they can produce creative outcomes, play an important role in the team’s performance. S.C. surveyed the world’s cave literature With the help of colleagues he then came up with the first list of cave biodiversity hot spots—those with at least 20 organisms specialized for subterranean life according to the criteria they settled on (Caves are much less diverse than most surface ecosystems where a biodiversity hot spot is defined by the presence of hundreds of species crowded into an area) With further work Culver and other cave biologists determined there existed a “ridge” of subterranean biodiversity that extended from the Spanish-French border through Slovenia and other places in the Balkans At that time Portugal didn’t rank high when it came to cave biodiversity but Reboleira thought her country could do better—almost no one there had worked on cave organisms since the early 1960s So for her graduate studies she extensively surveyed organisms in Portuguese caves and for a decade recruited volunteers and other researchers to her cause In 2014 the Portuguese government opened a “Troglobiário” a subterranean laboratory and visitor center built over Algar do Pena a cave unearthed in a quarry in 1985 in central Portugal Already about 3500 visitors a year have the chance to see cave animals and learn about the limestone formations called karst that form such caves Last week at the 2016 International Conference on Subterranean Biology meeting in Fayetteville Arkansas Reboleira proudly provided an update on Portugal’s subterranean fauna She noted a cave in southern Portugal that would on its own fit Culver’s definition of a cave biodiversity hot spot—it contains 22 cave-limited species some occurring nowhere else in the world One unique species is a quarter-sized pseudoscorpion (see image above) that is an order of magnitude larger than typical pseudoscorpions Another a flattened invertebrate called an isopod is the largest terrestrial isopod known in Europe Caves elsewhere around the country were also revealing new organisms Reboleira reported “The more we look the more we describe” she says That’s good because earning the cave “hot spot” label has become harder Culver says Since coming up with the 20 cave organisms standard—one that now scores of caves meet —he and his colleagues now require at least 25 terrestrial cave-specific species in a location or at least the same number of aquatic species And Portugal has new countries competing for subterranean biology honors At the meeting researchers from places such as Oman the Philippines and China described rapid progress identifying new cave species in their respective countries Until 10 years ago researchers had described just 21 obligate cave organisms from all of Southeast Asia says Stefano Taiti a cave biologist from the Institute of Ecosystem Study in Florence Italy Now dozens of cave fish are known from China alone he notes And at the meeting Chinese researchers showed an equally impressive array of newly described cave beetles Time for Reboleira to head back into Portugal’s caverns ” According to standard linguistic theory, Ben Sutherland/Flickr How the English language has evolved like a living creature By Michael Erard Nov.

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