Physicists Create World’s First Laser-Cooled Neutral Plasma

sci-news.com – Plasmas are naturally formed at high temperatures, such as those reached in the interiors of stars. Neutral plasmas consist of equal numbers of positive ions and electrons. In recent experiments, a team of physicists at Rice University worked with a cold neutral plasma created out of atoms of strontium that were ionized by laser light. The team used lasers to cool the ions down to about 50 mK (millikelvin), a breakthrough that could lead to simulators for exotic states of matter that occur...

Source: Thomas K. Langin, Grant M. Gorman, Thomas C. Killian. Laser cooling of ions in a neutral plasma. Science, 2019.

Ancient Britons Traveled Hundreds of Miles For Stonehenge Pork Roasts

geek.com – New research suggests prehistoric Britons traveled far and wide for a good party. Archaeologists have unearthed evidence of the earliest large-scale celebrations in the UK, attracting people and animals from across the country. …

Source: R. Madgwick, et al. Multi-isotope analysis reveals that feasts in the Stonehenge environs and across Wessex drew people and animals from throughout Britain. Science Advances, 2019.

Scientists ‘Wake Up’ Ancient Woolly Mammoth Cells in High-Tech Experiment

geek.com – Scientists in Japan have “awakened” 28,000-year-old cells from a woolly mammoth that lived on our planet years ago, and their observations could provide a better understanding of extinct animals’ lives. The team, which …

Source: Kazuo Yamagata, et al. Signs of biological activities of 28,000-year-old mammoth nuclei in mouse oocytes visualized by live-cell imaging. Scientific Reports, 2019.

Chimpanzee Culture Is Disappearing Thanks to Climate Change, Study Finds

vice.com – Common chimpanzee behaviors are disappearing thanks to climate change and proximity to humans.

Source: Hjalmar S. Kühl, et al. Human impact erodes chimpanzee behavioral diversity. Science, 2019.

Hidden compounds in many medications can trigger allergies

sciencenews.org – Analysis of 42,000 pill recipes shows nearly 93 percent have ingredients that may cause allergic reactions.

Source: Daniel Reker, et al. “Inactive” ingredients in oral medications. Science Translational Medicine, 2019.

Geneticists push for a 5-year global ban on gene-edited babies

sciencenews.org – Prominent scientists are using the word “moratorium” to make it clear that experiments to create babies with altered genes are wrong, for now.

Source: Eric S. Lander, et al. Adopt a moratorium on heritable genome editing. Nature, 2019.

For Just The Second Time, an HIV Patient is in Remission After Stem Cell Transplant

discovermagazine.com – A patient who lived with human immunodeficiency virus (HIV) for more than a decade is now free of the disease, researchers report today in the journal Nature. The retreat of the infection is only the second time such a case has been reported. In both instances, the patients received a bone marrow transplant to treat …

Source: Ravindra K Gupta, et al. HIV-1 remission following CCR5Δ32/Δ32 haematopoietic stem-cell transplantation. Nature, 2019.

Trilobites: Massacre of Children in Peru Might Have Been a Sacrifice to Stop Bad Weather

nytimes.com – Nearly 140 child skeletons were revealed at the site last year. And now researchers say it may have been a response to an El Niño event.

Source: Gabriel Prieto, et al. A mass sacrifice of children and camelids at the Huanchaquito-Las Llamas site, Moche Valley, Peru. PLOS ONE, 2019.

How sleep might repair your DNA

zmescience.com – Sleep might mitigate the damage done to DNA during wakeful hours.

Source: D. Zada, I. Bronshtein, T. Lerer-Goldshtein, Y. Garini, L. Appelbaum. Sleep increases chromosome dynamics to enable reduction of accumulating DNA damage in single neurons. Nature Communications, 2019.