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Science
“#Pocket-sized German satellite maker shoots for stars” An employee works on a satellite at OHB Space Systems, a German firm that is holding its own against bigger European comptetitors Holding its own against aerospace giants like pan-European Airbus Space or French-Italian Thales Alenia, German minnow OHB has carved out a space as a national champion…
“#US rescinds order denying visas for foreign students” The United States government rescinded its controversial decision to revoke foreign student visas whose courses move online due to coronavirus, a federal judge said Tuesday. The universities of Harvard and MIT—with the support of a number of other institutions, teachers’ unions and at least 18 US states—had…
“#World population in 2100 could be 2 billion below UN projections” By 2100, more than 20 countries—including Japan, Spain, Italy, Thailand, Portugal, South Korea and Poland—will see their populations decline by at least half Earth will be home to 8.8 billion souls in 2100, two billion fewer than current UN projections, according to a major…
“#Supercomputer reveals atmospheric impact of gigantic planetary collisions” Still image cross-section showing the impact (inset) and aftermath (main picture) of a 3D simulation of a giant planetary impact using 100 million particles, coloured by their internal energy, similar to their temperature. Credit: Dr Jacob Kegerreis, Durham University The giant impacts that dominate late stages of…
“#World population likely to shrink after mid-century, forecasting major shifts in global population and economic power” Top ten countries by population in 2017 &2100 Credit: The Lancet World’s population likely to shrink after mid-century, forecasting major shifts in global population and economic power—new analysis, published in The Lancet forecasts global, regional, and national populations, mortality,…
“#Invasive alien species may soon cause dramatic global biodiversity loss” Canada geese are now well established in Europe, posing a serious threat to biodiversity. They also damage farmland and have been involved in a number of bird strikes. Credit: Tom Koerner/USFWS (CC BY 2.0) flic.kr/p/HRBQXq An increase of 20 to 30 per cent of invasive…
“#Global methane emissions soar to record high” A visualization of global methane on January 26, 2018. Red shows areas with higher concentrations of methane in the atmosphere. Credit: Cindy Starr, Kel Elkins, Greg Shirah and Trent L. Schindler, NASA Scientific Visualization Studio Global emissions of methane have reached the highest levels on record. Increases are…
“#True colors: Scientists discuss evolution of white coloration of velvet ants” The Thistle-down velvet ant (Dasymutilla gloriosa), a type of wasp, is a rare example of a white-colored creature in a hot desert climate. Utah State University researchers investigated varied explanations for the insect’s pale coloration. Credit: Joseph S. Wilson Driving across the arid American…
“#Blast sends star hurtling across the Milky Way” The material ejected by the supernova will initially expand very rapidly, but then gradually slow down, forming an intricate giant bubble of hot glowing gas. Eventually, the charred remains of the white dwarf that exploded will overtake these gaseous layers, and speed out onto its journey across…
“#The plight of the Kalahari San” Credit: CC0 Public Domain Over the past few decades, San (Bushmen) communities in southern Africa, former hunter-gatherers, have developed new adaptive strategies to cope with climate change, the presence of other groups on their land, and the impacts of globalization. While San have likely lived in southern Africa for…