THINGS WE LEARNED IN THIS ISSUE

+ The Solar System could be full of DWARF PLANETS the size of Pluto - or bigger. + Everyday objects, EVEN ROCKS (RIGHT) can look amazing at extreme zoom levels. + Future organs for transplant might be GROWN INSIDE PIGS if we can overcome ethical issues. + GAME OF THRONES is unsurprisingly difficult to defend on scientific grounds - but not impossible. + A disease called ENCEPHALITIS LETHARGICA could return, and become a new epidemic.