Prices for sulfuric acid rose 700% in just 18 months. This was when oil was 180 and scrap steel was gold. Now it is 70% below the prices before the bubble. It has been a tough recession.

Monday night on "The Colbert Report," Stephen Colbert addressed a serious topic: global climate change, with a serious guest, Harvard environmental scientist David Keith.

Step 3. A burette is used to add sodium hydroxide to the sulfuric acid until the phenolphthalein changes colour to pink. This is the ‘end point,’ and the volume added is recorded as the titre.