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Caldera chronicles: Yellowstone fossils reveal history before volcano

Caldera chronicles: Yellowstone fossils reveal history before volcano
billingsgazette.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from billingsgazette.com Daily Mail and Mail on Sunday newspapers.

Brett French , Megan Norr , William Holmes , Yellowstone National Park , Geology Program At Yellowstone National Park , Smithsonian National Museum Of Natural History , Smithsonian National Museum , Caldera Chronicles , Yellowstone Volcano , Geology Program , Yellowstone National , ப்ரெட் பிரஞ்சு , வில்லியம் ஹோம்ஸ் , மஞ்சள் கல் தேசிய பூங்கா , புவியியல் ப்ரோக்ர்யாம் இல் மஞ்சள் கல் தேசிய பூங்கா , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறு , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் , கால்டெரா நாளாகமம் , மஞ்சள் கல் எரிமலை , புவியியல் ப்ரோக்ர்யாம் , மஞ்சள் கல் தேசிய ,

Ancient DNA Brings New Insights to Corn's 9,000-Year History

Thomas Harper
Some 9,000 years ago, corn as it is known today did not exist. Ancient peoples in southwestern Mexico encountered a wild grass called teosinte that offered ears smaller than a pinky finger with just a handful of stony kernels. But by stroke of genius or necessity, these Indigenous cultivators saw potential in the grain, adding it to their diets and putting it on a path to become a domesticated crop that now feeds billions.
Despite how vital corn, or maize, is to modern life, holes remain in the understanding of its journey through space and time. Now, a team co-led by Smithsonian researchers have used ancient DNA to fill in a few of those gaps. ....

United States , El Gigante , United Kingdom , Santa Barbara , Logan Kistler , Thomas Harper , Douglas Kennett , University Of California , Texasam University , Pennsylvania State University , Smithsonian National Museum Of Natural History , Proceedings Of The National Academy Sciences , University Of Warwick , Francis Crick Institute , New Insights , National Museum , National Academy , Central American , South American , South America , Central American El Gigante , Central America , ஒன்றுபட்டது மாநிலங்களில் , எல் ஜிகாண்டே , ஒன்றுபட்டது கிஂக்டம் , சாந்தா பார்பரா ,

Ancient Fire Scars of the Petrified Forest

When Bruce Byers brought home a piece of petrified wood he inherited after his father died in 2012, he didn’t plan to make it the subject of a new area of research. His father had collected the hunk of rock in Bears Ears, Utah, in the 1980s and had long used it as a doorstop. But with the 210-million-year-old fossil newly situated in his home, something niggled at Byers. The ancient log looked to him like it had a fire scar (
below, on right), a wood growth formation that happens at the base of a tree in response to a low-intensity ground fire. A patch of live tissue under the bark is killed, and the tree grows scar tissue curled around the wound in response. Byers recalls, “I thought, ‘This is interesting. I’ve never heard of a fossil fire scar.’” ....

Black Forest , United States , Bears Ears , Petrified Forest , Petrified Forest National Park , Tanya Byers , Bruce Byers , Jonathan Byers , Markus Stoffel , Dan Chaney , Tianhua He Of Curtin University , University Of New Mexico , University Of Montana , Smithsonian National Museum Of Natural History , University Of Geneva , University Of Coimbra , Forest National Park , Sidney Ash , New Mexico , Smithsonian National Museum , Natural History , Nature Conservancy , Late Triassic , Scientific Reports , Curtin University , கருப்பு காடு ,

How We Lifted Flight from Bird Evolution

December 17th, 2020, 6:00AM
/ BY
Erin Malsbury
Tens of millions of years of bird evolution guided some of the most important elements of human-powered flight. (Pixabay)
On December 17 in 1903, the Wright brothers achieved what humans had dreamed about since the earliest days of our species: soaring through the air. For millennia, visionaries watched birds take wing and wondered how they might do the same. Notes and inspiration from bird flight were integral in helping people finally achieve the goal, but our version of flying as well as how we got there contrasts starkly with that of birds.
While human flight came about through intense focus on a singular goal, flight in birds evolved incrementally over millions of years without direction. The path to modern birds was full of forks, twists and dead-ends. ....

Erin Malsbury , Peter Jakab , Wilbur Wright , Matthew Carrano , Otto Lilienthal , Helen James , Smithsonian National , Space Museum , Smithsonian Institution , University Of Montana Flight Laboratory , Smithsonian National Museum Of Natural History , How We Lifted Flight , National Museum , Kenneth Dial , National Air , Natural History , Deep Time , வில்பர் ரைட் , மேத்யூ கார்ரானோ , ஒட்தோ லிலிஎந்தல் , ஹெலன் ஜேம்ஸ் , ஸ்மித்சோனியன் தேசிய , இடம் அருங்காட்சியகம் , ஸ்மித்சோனியன் நிறுவனம் , பல்கலைக்கழகம் ஆஃப் மஂட்யாந விமானம் ஆய்வகம் , ஸ்மித்சோனியன் தேசிய அருங்காட்சியகம் ஆஃப் இயற்கை வரலாறு ,

Ideas, Inventions And Innovations : Ancient DNA Rewrites Corn's 9,000-Year Society-Shaping History

Ideas, Inventions And Innovations
Ancient DNA Rewrites Corn s 9,000-Year Society-Shaping History
Three 2,000-year-old cobs in Honduras show that people brought corn varieties back to Mesoamerica, possibly sparking productivity and shaping civilization.
Three roughly 2,000-year-old con cobs from the El Gigante rock shelter site in Honduras. These corn cobs were genetically analyzed by an international team of scientists. In the Dec. 14 issue of the journal the Proceedings of the National Academy of Sciences, Logan Kistler, curator of archaeogenomics and archaeobotany at the Smithsonian s National Museum of Natural History, and an international team of collaborators report the fully sequenced genomes of three roughly 2,000-year-old cobs from the El Gigante rock shelter in Honduras. Analysis of the three genomes reveals that these millennia-old varieties of Central American corn had South American ancestry and adds a new chapter in an emerging complex story of corn s do ....

United States , El Gigante , United Kingdom , Bryan Lavery , Santa Barbara , Logan Kistler , Thomas Harper , Douglas Kennett , University Of California , Texasam University , Pennsylvania State University , National Science Foundation , Smithsonian National Museum Of Natural History , University Of Warwick , Proceedings Of The National Academy Sciences , Francis Crick Institute , National Academy , National Museum , Natural History , Central American , South American , Central America , South America , Central American El Gigante , Francis Crick , ஒன்றுபட்டது மாநிலங்களில் ,