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Science

On Jan. 10 at the 2019 American Astronomical Society meeting in Seattle, an international team of astronomers announced that they have identified the type of companion star that made its partner in a binary system, a carbon-oxygen white dwarf star, explode. Through repeated observations of SN 2015cp, a supernova 545 million light years away, the team detected hydrogen-rich debris that the companion star had shed prior to the explosion.

Female Magellanic penguins are more likely to die at sea as juveniles, which has caused a skewed sex ratio of nearly three adult males to every female, as well as population decline of more than 40 percent since 1987 at one of their largest breeding colonies — Punta Tombo in Argentina.

In a paper published Jan. 2 in PLOS Biology, two scientists at the University of Washington and North Carolina State University use the economic theory of contests to illustrate how the competitive grant-application system has made the pursuit of research funding inefficient and unsustainable — and that alternative methods, such as a partial lottery to award grants, could relieve pressure on professors and free up time for research.

Two University of Washington scientists have unveiled a new statistical method for estimating migration flows between countries. They show that rates of migration are higher than previously thought, but also relatively stable, fluctuating between 1.1 and 1.3 percent of global population from 1990 to 2015. In addition, since 1990 approximately 45 percent of migrants have returned to their home countries, a much higher estimate than other methods.

A UW team created a mechanical eye under the ocean’s surface that could live near renewable-energy sites and use a series of sensors to watch nearby animals. On Dec. 13, the researchers put the newest version of the AMP into the waters of Seattle’s Portage Bay for two weeks of preliminary testing before a more thorough analysis is conducted in Sequim, Washington.

A new collaborative study led by a research team at the Pacific Northwest National Laboratory, University of California, Los Angeles and the University of Washington could provide engineers new design rules for creating microelectronics, membranes and tissues, and open up better production methods for new materials.

New research from the University of Washington and Stanford University combines models of ocean conditions and animal metabolism with published lab data and paleoceanographic records to show that the Permian mass extinction in the oceans was caused by global warming that left animals unable to breathe. As temperatures rose and the metabolism of marine animals sped up, the warmer waters could not hold enough oxygen for them to survive.

In a comprehensive study of healthy corals published Nov. 22 in the journal Nature Communications, a team of scientists from the University of Washington Bothell, Pennsylvania State University and Oregon State University report that coral bacteria are a surprisingly diverse bunch — and that different sections of the coral body can host unique communities of bacteria.

A new, free tool with temperature and precipitation records across Washington, Oregon, Idaho and western Montana as far back as 1881 lets users play around to discover significant trends. It also includes historical snow records for Washington state.

Here in what is called the Anthropocene era, humans and our urban environments appear to be driving accelerated evolutionary change in plants, animals, fungi, viruses and more — changes that could affect key ecosystem functions and thus human well-being. These interactions between evolution and ecology are called “eco-evolutionary feedback.” The National Science Foundation has awarded a five-year, $500,000 grant to a multi-institution research network team headed by Marina Alberti, University of Washington professor of urban design and planning, to advance…

In a paper published Oct. 8 in the journal Nano Letters, a team from the University of Washington and the National Tsing Hua University in Taiwan announced that it has constructed functional metalenses that are one-tenth to one-half the thickness of the wavelengths of light that they focus. Their metalenses, which were constructed out of layered 2D materials, were as thin as 190 nanometers — less than 1/100,000ths of an inch thick.

Researchers from the University of Washington have shown how Magellanic penguins fare during the winter months when they spend months at sea feeding. They have discovered that oceanographic features are more likely to negatively impact the body conditions of Magellanic penguin females, but not males, when the penguins return to their nesting grounds in spring.

Jiun-Haw Chu, a University of Washington assistant professor of physics and faculty member at the UW’s Clean Energy Institute, has been named a 2018 fellow by the David and Lucile Packard Foundation for his research on quantum materials — substances that exhibit novel combinations of quantum-mechanical properties that could one day transform information technology.

Researchers at the University of Washington have developed a new machine-learning system, called Prescience, which uses input from patient charts and standard operating room sensors to predict the likelihood that a patient will develop hypoxemia — a condition when blood oxygen levels dip slightly below normal. Prescience also provides real-world explanations behind its predictions.