I hate to broach the subject but plastics in our lives are also doing us great harm.
They leave residues in our food and drinks when they are used to heat or chill.
There are many studies going on now about this subject but the plastics lobby in Washington has spread so much disinformation about the subject that it a tough battle to convince consumers that plastics used for food and drink are not safe.
Here are some links for guidance:
https://dev.copirg.org/reports/envir...c-baby-bottles
http://www.treehugger.com/files/2007...ical_found.php
http://www.npr.org/templates/story/s...oryId=14991881
http://www.culturechange.org/e-lette...ics_enemy.html
http://www.relfe.com/microwave.html
http://www.treehugger.com/files/2007..._microwave.php
http://health.msn.com/dietfitness/ar...ntid=100149491