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1st Americans came over in 4 different waves from Siberia, linguist arguesThe languages of the earliest Americans evolved in 4 waves, according to one expert.
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Obsidian blades with food traces reveal 1st settlers of Rapa Nui had regular contact with South Americans 1,000 years agoThe earliest settlers of Rapa Nui, also known as Easter Island, appear to have had some sort of contact with people from South America as early as 1,000 years ago, a new plant study finds.
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Scientists release genetically modified mosquitoes to fight dengue in BrazilGenetically modified mosquitoes are being released in Brazil to reduce the spread of the viral infection dengue fever.
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City-size seamount triple the height of world's tallest building discovered via gravitational anomaliesResearchers found and mapped four seamounts in the deep sea off the coast of Peru and Chile. The tallest of these new peaks rises around 1.5 miles above the seafloor.
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'Roots' of Colombian mountains 'dripped' into the mantle millions of years ago — but the peaks still stand tallEarth's crust once formed a dense "root" supporting Colombia's northern Sierra Nevada de Santa Marta mountains, but new research suggests this prop sank into the mantle millions of years ago.
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23 million-year-old petrified mangrove forest discovered hiding in plain sight in PanamaFossils discovered on Barro Colorado Island suggest central Panama was once home to a vast mangrove forest that was preserved when a volcanic mudflow buried it 23 million years ago.
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Lost world of lagoons filled with mounds of microbes discovered in Atacama desertResearchers have discovered a jaw-dropping ecosystem of crystal-clear lagoons and salt plains in Argentina's Puna de Atacama desert that could offer a window onto early life on Earth and Mars.
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Head lice invaded the Americas alongside the 1st humansA genetic analysis of head lice that have evolved in tandem with humans has revealed two distinct groups of lice that merged in the Americas as a result of Asian and European migrations.
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22,000-foot volcano summit is home to Earth's highest-dwelling vertebrates, study confirmsMummified mice found atop volcanoes in South America have long hinted that rodents forage on peaks as tall as 22,000 feet, but it turns out mice permanently live at these extreme heights.
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