We've seen quite a few tech companies boast about their environmental efforts in recent years, and it looks like you can now also add Microsoft to the list of those attempting to be carbon neutral. As you might expect, while that includes some alternative energy efforts and energy-saving measures, it also makes use of a carbon offset program to make up the difference, which will see Microsoft put money into an internal fund for emissions it's not able to offset through other means. That means Microsoft will be able to declare itself carbon neutral fairly soon -- by the start of the 2013 fiscal year, to be specific, which actually begins this July. You can find additional details on the initiative in the company's blog post on the subject, and yet more in the white paper linked below.