either hydro storage is something i've been pushing very hard, the bpa to start doing, pump from one dam to another dam so it has essentially no environmental impact, but it is a form of storage. and we have a target. we know that energy stores at the megawatt and the megawatt hour scale would have incredible applications in the electricity distribution system. it would make our electricity distribution system much more efficient, because all the little ripples. you have a few major generating stations. it goes to distribute out here. you purposely overfill today. and if you had little batteries of, you know, kind of that size scale popped here and there, it would have a profound difference. right now the energy storage is about $300, $350 a kilowatt hour. at $100, $150 a kilowatt hour, it goes viral. energy storage for renewals, for make mortgage efficient distribution system, energy storages for a sounder, more robust grid are all part of that. e

this one took out 92% of contaminants we tested for, the dirty 15 except for bpa. all? >> this one is all the way in the back here. the big problem is remembering to change them. >> yeah. we all get the filters and forget to change them. not good. next is whirlpool. >> it did well. 92% of all contaminants. this is in a lot of whirlpool refrigerators as well as amana and maytag. >> are they higher in cost? >> they are $40 and table top pitchers are similar. >> i know you looked at quite a few. first is zero water. >> this one did well for a table top. it took out 95% of estrin, ibuprofen and bpa and 80% of a number of pesticides. it did well. >> i understand it's changed some of the devices. >> they have changed the flow rate so it could affect the filtering. it did a great job. >> you tested the pur. >> it took out 100% of estrin and 81% of a lot of other chemicals and drugs. did a really good job for a tabletop filter. >> how often should you change the filter? >> generally they give you a gallon or a time amount between two and four months. much easier with the ti

. >> the story goes way beyond popcorn and vaccinations, three months ago we had bpa, bisphenol-a, andis found in the water bottles and, also in the microwave, and you have to be naive with the particular study you will stop have popcorn and popcorn is this reason but each of these have an impact and a little of bps and a little bit of the pfc, it adds up. >> jamie: is it the popcorn or not give our kids food made in the microwave. it would be a big, bold change. >> i'm worried about the radiation from the microwave but today we are talking about the linings, and it is good to know it but you cannot avoid being exposed to it. the list of things: drinking water, microwave popcorn, dental cleaners, nail polish, and, shoes, shampoo, a bunch of wires, and, seafood, and, gortex and a big one to watch is the teflon, the pans with teflon have the pfcs and the big message out there is look for products that have something called perfluoril and, stay away from them. >> eric: does it say it on the product? >> the key point is the studies have been done in mice and show an effect with immune func