Measurements and Units

Pi: how many digits do you need? [Dot Physics] (ScienceBlogs)

13 Mar 2010

The most basic explanation of Pi is that it is the ratio of the circumference to the diameter for a circle. That seems simple enough, but it turns out that Pi is an irrational number - so you can't just write it down. Oh, I know that you are an uber-geek and you could recite the first 80 digits of Pi. But the question is - how many digits are enough? In this post, I am going to assume that we ...

EPCOR announces 2009 financial results (CNW Group via Yahoo! Finance)

12 Mar 2010

EPCOR Utilities Inc. today filed its annual and fourth quarter results for 2009.

Ocean acidification: another path to EPA rules on carbon emissions? (The Christian Science Monitor)

12 Mar 2010

In a legal settlement Thursday, the EPA agreed to help states test coastal waters for acidity, and to weigh whether to tighten rules on carbon emissions to address ocean acidification.