Scientists Find Earliest Sign of Cultivated Crops in Americas
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Scientists exploring the western slopes of the Andes in northern Peru have found seeds of domesticated squash from almost 10,000 years ago.
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A new DNA analysis indicates that the parasites  accompanied their human hosts in the original peopling of the Americas, probably as early as 15,000 years ago.
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BATON ROUGE, La. The first US cases of soybean rust have turned up at two research sites in Louisiana. The fungus creates reddish-brown blotches on leaves.
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Ancient carbon-rich globules could offer a glimpse into the solar system's planet-building past and may provide clues to how life on Earth first arose.
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Who says food fads can't last? Thousands of years before the advent of Tex-Mex, ancient Americans were spicing up stew with red hot chili peppers. New fossil evidence shows prehistoric people from southern Peru up to the Bahamas were cultivating varieties of chilies millennia before Columbus' arrival brought the spice to world cuisine.
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Researchers have deciphered for the first time the genetic code of a tree, which could lead to new varieties better at producing wood, paper and fuel.
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US Agriculture Department tests confirmed the spread of soybean rust, a yield-slashing fungus, in three more fields in Louisiana, a university scientist familiar with USDA activities told Reuters on Tuesday.
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The idea that comets brought the chemical "seeds" for life to the early Earth is given a big boost by new research.
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The oldest solar observatory in the Americas has been discovered pointing to the existence of ancient Sun cults, scientists report.
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As the first signs of winter push into the US Northeast, American researchers have some good news for fair weather fans - spring is coming earlier than it used to.
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A secret long held by plants has been revealed by Howard Hughes Medical Institute researchers.
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It's more than idle doodling and the meaning is unclear. But there's one thing researchers are sure of: The insect, ear of corn, inverted fish and other symbols inscribed on an ancient stone slab is the earliest known writing in the Western Hemisphere.
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Here's a hot, new discovery: archaeologists have traced what they believe is evidence of the first home-grown chili peppers, used in South America 6,100 years ago.
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Astronomers say they may have detected the light from some of the earliest stars to form in the Universe.
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Archaeologists said Wednesday they had found evidence that humans lived in North America at least 50,000 years ago, far earlier than has been thought.
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Some of the earliest settlers of America may have been from Australia, southern Asia, and the Pacific, not northern Asia, research suggests.
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The first US cases of soybean rust, a fungus that hinders plant growth and drastically cuts crop production, were found at two research sites in Louisiana, officials said Wednesday.