sciam.com – Humans have a history of status division stretching back at least 4,000 years
Source: Alissa Mittnik, et al. Kinship-based social inequality in Bronze Age Europe. Science, 2019.
livescience.com – And they learn new songs.
Source: Wenchan Zhao, Francisco Garcia-Oscos, Daniel Dinh, Todd F. Roberts. Inception of memories that guide vocal learning in the songbird. Science, 2019.
sci-news.com – Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have captured a stunning image of two circumstellar disks in which two protostars are growing, fed by a complex network of filaments of gas and dust.
Source: F. O. Alves, et al. Gas flow and accretion via spiral streamers and circumstellar disks in a young binary protostar. Science, 2019.
science20.com – Global warming did once kill off a once-common species, but it was the transition from the last Ice Age to the current warming period, starting 15,000 years ago.That well-known species was the woolly mammoth but it managed to hang on until 2,000 B.C. Its last known habitat was Wrangel Island in the Arctic Ocean.
Source: Laura Arppe, et al. Thriving or surviving? The isotopic record of the Wrangel Island woolly mammoth population. Quaternary Science Reviews, 2019.
arstechnica.com – Unusual cooling mechanism could be more efficient than current appliances.
Source: Torsional refrigeration by twisted, coiled, and supercoiled fibers. Science, 2019.
sciencedaily.com – There may be a connection between food comas -- resting after eating -- and the formation of long-term memories, a team of neuroscientists concludes based on its study on brain activity in sea slugs.
Source: Nikolay Vadimovich Kukushkin, Sidney Paulina Williams, Thomas James Carew. Neurotropic and modulatory effects of insulin-like growth factor II in Aplysia. Scientific Reports, 2019.
npr.org – After his son developed a rare eye cancer, a chemist in Texas developed a smart phone app that uses a camera and artificial intelligence to detect early signs of eye disease.
Source: Micheal C. Munson, et al. Autonomous early detection of eye disease in childhood photographs. Science Advances, 2019.
arstechnica.com – The formula coats plants thoroughly and sticks to them even through light rain.
Source: Anthony C. Yu, et al. Wildfire prevention through prophylactic treatment of high-risk landscapes using viscoelastic retardant fluids. Proceedings of the National Academy of Sciences, 2019.
medicaldaily.com – A new study found that the supermassive black hole at the center of the Milky Way caused the powerful explosion that created a light show reaching Earth and witnessed by human ancestors 3.5 million years ago.
Source: Joss Bland-Hawthorn, et al. The large-scale ionization cones in the Galaxy. arXiv: Astrophysical Journal, November issue, 2019, 2019.
nytimes.com – FEMA's buyout money goes disproportionately to high-income counties, new research shows. The findings raise concerns about fairness and efficiency.
Source: Katharine J. Mach, et al. Managed retreat through voluntary buyouts of flood-prone properties. Science Advances, 2019.