Rosetta arrives at the comet, an uncontacted tribe gets influenza, and a bacteriophage is the most common virus in your body. Plus, how bears overeat but don’t get diabetes, a year long microbiome study, and crazy octopus sex!

People prefer pain over boredom, mantis shrimps can see in UV, and plants can hear caterpillars. One species of lichen is actually 126, there’s less plastic in the ocean than there should be, and Ukrainian astronomers take a stab at Vladimir Putin.