Fast Radio Bursts Get Fresh Answers An explanation for the intense pulses of radiation called fast radio bursts (FRBs) has eluded astronomers until now. Recent observations and in-depth studies have started fitting the puzzle pieces together, Adam Mann reports for Scientific American. One of the FRB puzzle pieces is the role of magnetars, highly magnetized neutron stars. In 2019 Josh Sokol reported for Quanta on a new model explaining how FRBs occur when magnetars make shockwaves by hurling charged particles outward. Pregnancy, Placentas and Autoimmune Disease Why do 80% of autoimmune disease cases afflict women? During pregnancy, the placenta helps to lower immune defenses. A new theory suggests that lower pregnancy rates are leaving women's immune system hypervigilant, Olga Khazan reports for The Atlantic. The placenta's ability to foil immunological defenses resembles that of cancer cells. Earlier this year Max Kozlov reported for Quanta about scientists who are studying the placenta to better understand and beat cancer. | |