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Two sto­ries of sur­pris­ing­ly sim­ple sci­en­tif­ic dis­cov­er­ies one that seems straight out of sci-fi, and the oth­er, direct­ly from the past. 

First, we head to the lab of neu­ro­sci­en­tist Li-Huei Tsai to dis­cov­er the pow­er of flash­ing lights on an Alzheimer’s‑addled (mouse) brain. In this seg­ment, Li-Huei tells us about her team’s lat­est research, which also includes flash­ing sound, and ways in which light and sound togeth­er might retrieve lost mem­o­ries. This new sci­ence is not a cure, and is far from a treat­ment, but it’s a find­ing so … sim­ple, you won’t be able to shake it. Come join us for a lab vis­it, where we’ll meet some mice, stare at some light, and come face-to-face with the mys­tery of mem­o­ry. We can promise you: by the end, you’ll nev­er think the same way about Christ­mas lights again. Or jin­gle bells.

Then, what hap­pens when you com­bine an axe-wield­ing micro­bi­ol­o­gist and a dis­ease-obsessed his­to­ri­an? A strange brew that’s hard to resist, even for a mod­ern day microbe. In the war on dev­il­ish microbes, our weapons are start­ing to fail us. The antibi­otics we once wield­ed like mirac­u­lous flam­ing swords seem more like luke­warm but­ter knives. But today we fol­low an odd cou­ple to a sto­ried land of elves and drag­ons. There, they uncov­er a 1000-year-old secret that makes us recon­sid­er our most basic assump­tions about human progress and won­der: What if the only way for­ward is backward?