Weather History: April 25, 1915 In Columbus and Pa
On April 25, 1915 records show high temperatures in Columbus Ohio and in Pennsylvania with notable heat readings. The item notes regional climate extremes and historical weather context for that date.
MENTIONED IN THIS ARTICLE
Columbus
Ohio
Drought Threatened Early Humans 70,000 Years Ago
Genetic analysis suggests human populations in Africa reduced to about 2000 due to drought, with tiny isolated bands later reuniting and expanding. Researchers led by Behar and Rosset, publishing in the American Journal of Human Genetics, highlight ancient population splits before the Stone Age reunification.
MENTIONED IN THIS ARTICLE
Washington
Africa
Stanford University
Spencer Wells
National Geographic Society
Wells
American Journal of Human Genetics
South Africa
Doron Behar
Rambam Medical Center
Haifa
Israel
Saharon Rosset
IBM T
Watson Research Center
Yorktown Heights
N.Y
Tel Aviv University
T. rex tied to modern birds in DNA protein clues
Scientists using fossil collagen from Tyrannosaurus rex confirm a close link to birds such as chickens and ostriches. The work in Science shows proteins align T rex with birds, not a direct dinosaur DNA hold, and positions T rex near alligators and avians in the evolutionary tree.
MENTIONED IN THIS ARTICLE
Washington
Science
John M. Asara
Harvard
Chris Organ
Harvard University
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