UNLIKELY CANDIDATE The antidepressant drug Zoloft and another approved medication might fight the Ebola virus (shown).
C. Bickel/Science Translational Medicine
GETTING AROUND The chikungunya virus spreads via mosquitoes in tropical regions. Now it has found a way to hijack a second mosquito, posing a threat to people in Europe, North America and China. (See below for a detailed version of the map.)
Geoatlas/Graphi-Ogre, adapted by J. Hirshfeld
MOLECULAR GEIGER COUNTER The abundance of small pieces of genetic material called microRNAs falls or rises in the blood of mice after radiation exposure. A lethal dose of 8 grays of radiation (red dots) produces a different pattern than a serious but survivable dose of 6.5 grays (black triangles).
S.S. Acharya et al/Science Translational Medicine 2015