npr.org – Scientists say their goal was to rediscover a type of chevrotain that had been "lost to science" for nearly 30 years. Chevrotains are the world's smallest hoofed mammal, or ungulate.
Source: An Nguyen, et al. Camera-trap evidence that the silver-backed chevrotain Tragulus versicolor remains in the wild in Vietnam. Nature Ecology & Evolution, 2019.
digitaltrends.com – Most people think of space as a flat sheet: You travel in one direction, and you end up far from your starting point. But a new paper suggests that the universe may in fact be spherical: If you travel far enough in the same direction, you'd end up back where you started.
Source: Eleonora Di Valentino, Alessandro Melchiorri, Joseph Silk. Planck evidence for a closed Universe and a possible crisis for cosmology. Nature Astronomy, 2019.
zmescience.com – Unsinkable ships could become a reality with such technology.
Source: Zhibing Zhan, et al. Highly Floatable Superhydrophobic Metallic Assembly for Aquatic Applications. ACS Applied Materials & Interfaces, 2019.
arstechnica.com – The virus blanks out immune system’s memory cells and up to 73% of antibodies.
Source: Velislava N. Petrova, et al. Incomplete genetic reconstitution of B cell pools contributes to prolonged immunosuppression after measles. Science Immunology, 2019.
zmescience.com – We like it easy... but not too easy.
Source: Robert C. Wilson, Amitai Shenhav, Mark Straccia, Jonathan D. Cohen. The Eighty Five Percent Rule for optimal learning. Nature Communications, 2019.
sci-news.com – In a paper published in the November 1, 2019 issue of the journal Science, a team of astronomers offers a new way to search for stellar-mass black holes, and shows that it is possible there is a class of black holes smaller than the smallest known black holes in the Universe.
Source: Todd A. Thompson, et al. A noninteracting low-mass black hole–giant star binary system. Science, 2019.
newscientist.com – Three times more people than we thought are living on land threatened by flooding from sea level rises by 2100, with the threat particularly severe in Asia
Source: Scott A. Kulp, Benjamin H. Strauss. New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding. Nature Communications, 2019.
sci-news.com – High-intensity interval training results in the greatest memory performance in inactive older adults compared to moderate training or stretching, according to new research from McMaster University.
Source: Ana Kovacevic, Barbara Fenesi, Emily Paolucci, Jennifer J. Heisz. The effects of aerobic exercise intensity on memory in older adults. Applied Physiology, Nutrition, and Metabolism, 2019.
newscientist.com – A study claims to have pinpointed the Okavango Delta in Botswana as the origin of humanity, but geneticists and anthropologists say the evidence is deeply flawed
Source: Eva K. F. Chan, et al. Human origins in a southern African palaeo-wetland and first migrations. Nature, 2019.
sci-news.com – In November 2018, NASA’s Voyager 2 spacecraft became only the second human-made object to cross the outer edge of the Sun’s heliosphere, the bubble of space filled by the solar wind. In a series of five papers in the journal Nature Astronomy, researchers describe what they observed during and since Voyager 2’s historic exit.
Source: John D. Richardson, John W. Belcher, Paula Garcia-Galindo, Leonard F. Burlaga. Voyager 2 plasma observations of the heliopause and interstellar medium. Nature Astronomy, 2019.