Article on calories

Not sure if anyone has already posted this. Apologies if they have.
But I saw an interesting article. We all know that calorie counting is an imprecise science at best but this article goes further to mention that the way we currently count calories for some foods may not be correct.

http://news.sciencemag.org/sciencenow/2013/02/have-we-been-miscounting-calorie.html?ref=hp

I'll let others with more nutritional knowledge than myself discuss.