The Milky Way is consuming more gas than it is expelling, according to findings published in The Astrophysical Journal. Researchers used data from the Hubble Space Telescope to make their calculations and suspect some of the extra mass may be from the intergalactic medium.
Researchers have developed a 3D mathematical model that predicts whether oobleck, a non-Newtonian fluid, will behave like a liquid or a solid. "[T]he rules that govern how this material flows are very nuanced," says Ken Kamrin, an author of the study published in Proceedings of the National Academy of Sciences.
Genetic activity in koalas may provide a unique window into evolutionary processes, say researchers who asked whether a defective version of retrovirus in a population of marsupials provides protection against diseases such as chlamydia. Researchers are focusing on the role of piRNAs, bits of RNA that deactivate endogenous retroviruses.
The Ottoman Empire rejected Leonardo da Vinci's bridge design in the early 1500s, but the Renaissance Man now has vindication thanks to MIT. Researchers used 3D printing to create the blocks for a 1:500-scale replica to prove the viability of the da Vinci design -- a flattened arch to allow masted vessels to pass beneath and wings at each end to brace against winds.
Scientists at the University of Pittsburgh have developed a device that uses red light to remove carbon monoxide from the blood and oxygenate it in tests involving rats, according to a study in the journal Science Translational Medicine. The device pumps blood from a vein in the leg through a porous membrane where it is exposed to red light.
Veterans diagnosed with post-traumatic stress disorder are at higher risk of developing REM sleep behavior disorder, or RBD, than nonveterans, according to findings published in Sleep. RBD is marked by thrashing, which can cause injury to the individual or their partner, and may be linked to Parkinson's disease, researchers say.
Researchers examined 43 children with high-risk neuroblastoma who underwent six rounds of chemotherapy combined with an antibody therapy similar to dinutuximab and found that 76% had some tumor regression after two rounds of treatment, while nearly 86% remained relapse-free after two years, compared with only 50% of those who didn't receive antibody therapy in a previous study. The findings were published in the journal Clinical Cancer Research.
Five universities in the Florida Alliance for Graduate Education and the Professoriate will use a $2.4 million grant from the National Science Foundation to support minority women in doctoral, post-doctoral, and early-career STEM fields. The alliance will conduct research camps in north, central and south Florida and raise awareness among faculty and students.
Sigma Xi Executive Director and CEO Jamie Vernon shares his insights about a new report on the American public's trust in scientists, and areas of opportunity for organizations like Sigma Xi to build public trust. The Society is ready to move forward; the Board of Directors has approved the establishment of the Committee on Scientific Conduct and Professional Ethics.