Type Ia supernovae are violent stellar explosions that shine as some of the brightest objects in the universe. But there are still many mysteries surrounding their origin—what kind of star system they originate in and how the explosions begin. New work from the intermediate Palomar Transient Factory team of astronomers, including Carnegie’s Mansi Kasliwal, provides strong evidence pointing toward one origin theory, called the single degenerate channel.
A team has, for the first time, discovered how to produce ultra-thin "diamond nanothreads" that promise extraordinary properties, including strength and stiffness greater than that of today's strongest nanotubes and polymer fibers. Such exceedingly strong, stiff, and light materials have an array of potential applications, everything from more-fuel efficient vehicles or even the science fictional-sounding proposal for a “space elevator.”
Stanford, CA— Carnegie’s David Ehrhardt has been awarded an honorary fellowship of the Royal Microscopical Society. It was announced during the society’s Botanical Microscopy 2015 meeting at Exeter University.
Potential fellows must be nominated and recommended by five or more current fellows, of which there are never more than 65 at any given time. The proposed honoree is then put before the society’s council, which approves or rejects the nomination.
Washington, D.C.— Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet’s deep carbon cycle, primarily due to oceanic crust sinking into the mantle, a process called subduction. During subduction, carbonates interact with other minerals, which alter their chemical compositions.
Washington, DC— You know the old saying: Location, location, location? It turns out that it applies to the Amazon rainforest, too. New work from Carnegie’s Greg Asner illustrates a hidden tapestry of chemical variation across the lowland Peruvian Amazon, with plants in different areas producing an array of chemicals that changes across the region’s topography. His team’s work is published by Nature Geoscience.
Physics and chemistry have arrived at a deep understanding of the non-living world. Can we expect to reach similar insights, integrating concepts and quantitative explanation, in biology? Life at...