From the Smithsonian MuseumsThis year was full of exciting research and discoveries at the Smithsonian’s National Museum of Natural History. From tripling the number of known electric eels to uncovering how humans changed nature across millennia, our researchers addressed fundamental questions, sparked curiosity and showed the beauty and wonder of our planet with their research. Here are some of our most popular discoveries from 2019.1. Humans first caused environmental change earlier than we thoughtWe transform our environment by building roads, airports and cities. This isn’t new. But,...…From the Smithsonian MuseumsThis year was full of exciting research and discoveries at the Smithsonian’s National Museum of Natural History. From tripling the number of known electric eels to uncovering how humans changed nature across millennia, our researchers addressed fundamental questions, sparked curiosity and showed the beauty and wonder of our planet with their research. Here are some of our most popular discoveries from 2019.1. Humans first caused environmental change earlier than we thoughtWe transform our environment by building roads, airports and cities. This isn’t new. But,...WW…