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Posted inSci/Tech

Textbook story of how humans populated America is ‘biologically unviable,’ study finds

Aug. 11, 2016 – The established theory about the route by which Ice Age peoples first reached the present-day United States has been challenged by an unprecedented study which concludes that their supposed entry route was “biologically unviable”. The first people to reach the Americas crossed via an ancient land bridge between Siberia and Alaska […]

Posted inSci/Tech

New map details threat of Zika across Europe, US

LAWRENCE, KS, Aug. 10, 2016 – With Zika sparking anxiety at the Summer Olympic Games in Brazil, and now being transmitted in Florida through contact with mosquitoes, accurately mapping the distribution of the virus is increasingly urgent. Accounting for a host of often-overlooked drivers of transmission, a team of University of Kansas researchers has mapped […]

Posted inSci/Tech

Cancer-causing chemical in drinking water traced to fire-fighting foam

Aug. 9, 2016 – Fire-fighting foam containing highly fluorinated chemicals is contaminating drinking water supplies around many of the nation’s military bases, airports and industrial sites, according to a new study by UC Berkeley and Harvard University researchers. In humans, these chemicals have been linked to kidney and testicular cancer, high cholesterol, obesity and endocrine […]

Posted inSci/Tech

Sunflowers move by the clock

Aug. 5, 2016 – It’s summertime, and the fields of Yolo County are filled with ranks of sunflowers, dutifully watching the rising sun. At the nearby University of California, Davis, plant biologists have now discovered how sunflowers use their internal circadian clock, acting on growth hormones, to follow the sun during the day as they […]

Posted inSci/Tech

New fossil evidence supports theory that first mass extinction engineered by early animals

July 31, 2016 – Newly discovered fossil evidence from Namibia strengthens the proposition that the world’s first mass extinction was caused by “ecosystem engineers” – newly evolved biological organisms that altered the environment so radically it drove older species to extinction. The event, known as the end-Ediacaran extinction, took place 540 million years ago. The earliest […]