Summary for Friday April 9th

Topic 1: Filtration systems: ...such as those sold by Brita and pur owned respectively by Clorox and Procter and Gamble are good at removing highly polar molecules (the ones that make water smell and taste unpleasant) by attracting them to activated charcoal but not so good at removing microorganisms and toxic metals. ...although, pur now has a 3-stage filter where the third stage is a micro-porous filter that removes most (99.9%) of the most common harmful pathogens...

Topic 2: The 32% of Americans that "definitely know" where their water comes from is only slightly lower than our class at the beginning of the semester...

Topic 3: The political "debate" over perchlorate is largely "fueled" by those that use it...

Topic 4: Big Spring- Lexington almost had its own Poland Springs just NE of campus. Nestlé, had taken an option to purchase Big Spring with plans to consider building a major bottling facility in Rockbridge County (RACC- scroll down) back in 2003.

Topic 5: Bottlemania homework- brief discussion...

Topic 6: Reading for today 'How Bad For The Environment Can Throwing Away One Plastic Bottle Be?' 30 Million People Wonder Aside from the additional water that is required to produce bottled water (2-3 liters per liter of bottled water), and the energy that is required in its production (one liter of water requires about 0.25 liters of oil in energy), the another major environmental misdeed on the resume of bottled water is the waste generated by the packaging.
Though bottled water containers are recyclable, the fact is that the rate of recycling is quite low (around 12%). This means that the vast majority of bottles are ending up in landfills or worse. ...and this is aside from issues related to downcycling and a weakening market for recycled goods

The my maps page has been updated with the locations mentioned in today's lecture.

There were no .ppt slides shown today in lecture.