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Science
“#A biologist and a historian are looking for art to trace fruit and vegetable evolution” Authors Ive De Smet (left) and David Vergauwen (right) in front of a still-life painting depicting fruits. Credit: Liesbeth Everaert Plant geneticists seeking to understand the history of the plants we eat can decode the genomes of ancient crops from…
“#Scientists achieve first complete assembly of human X chromosome” Credit: CC0 Public Domain Although the current human reference genome is the most accurate and complete vertebrate genome ever produced, there are still gaps in the DNA sequence, even after two decades of improvements. Now, for the first time, scientists have determined the complete sequence of…
“#Ancient oyster shells provide historical insights” Credit: CC0 Public Domain An interdisciplinary team of scientists studying thousands of oyster shells along the Georgia coast, some as old as 4,500 years, has published new insights into how Native Americans sustained oyster harvests for thousands of years, observations that may lead to better management practices of oyster…
“#NASA infrared view finds small areas of strength in new depression 6E” On July 14 at 5:50 a.m. EDT (0950 UTC), the MODIS instrument aboard NASA’s Aqua satellite gathered temperature information about Tropical Depression 6E’s cloud tops. MODIS found a few small areas of powerful thunderstorms (red) where temperatures were as cold as or colder…
“#Innovative catalytic reaction for low-cost synthesis of aromatic esters” Credit: CC0 Public Domain Aromatic esters are chemicals that contain an aromatic ring consisting of functional groups called esters. These organic compounds are widely used as chemical feedstock in industries like food and beverages, pharmaceuticals, and cosmetics. Thus, finding efficient reactions for their synthesis is an…
“#For chimpanzees, salt and pepper hair not a marker of old age” There is significant individual variation in how chimpanzees, like this one at Gombe National Park, experience pigment loss. Credit: Ian C. Gilby Silver strands and graying hair is a sign of aging in humans, but things aren’t so simple for our closest ape…
“#Converting female mosquitoes to non-biting males with implications for mosquito control” Michelle Anderson (left) and Azadeh Aryan (right) are seen performing experiments in the insectary in 2016. Credit: Photo courtesy of Avery Stolte Virginia Tech researchers have proven that a single gene can convert female Aedes aegypti mosquitoes into fertile male mosquitoes and identified a…
“#What determines a warbler’s colors?” While blue-winged warblers have predominantly yellow underparts, golden-winged warblers have white bellies and a black throat patch and face mask. Hybrid offspring of blue-winged and golden-winged warblers have a mix of coloration from the two parent species. Credit: David Toews, Penn State A new study has narrowed down the region…
“#Physicists introduce novel mechanism for electron optics in solid-state systems” Schematic of the electron–hole interference: Electron-like (blue) and hole-like (red) states coexisting in a double quantum well can interfere if the system is suitably biased. Credit: ETH Zurich/D-PHYS Zilberberg group Electrons can interfere in the same manner as water, acoustical or light waves do. When…
“#No evidence that predator control will save mountain caribou, study says” Credit: CC0 Public Domain Addressing potential threats from predators has not slowed the dramatic decline of mountain caribou in British Columbia and Alberta, according to a new study by scientists from the University of Alberta and two other western Canadian universities. Biologists reassessed data…