The Higs-Boson particle, and I'm not very knowledgeable on the subject, is supposedly a subatomic particle that, essentially, gives things mass. Think of your atom. The electrons are virtually weightless. But your neutrons are like atoms in themselves. They contain a number of different subatomic particles, one of them being, in theory, the Higs-Boson. This particle basically is everything, so it's kind of a big deal. Here's an article on what is thought to be the discovery of this particle at the large Hadron collider out in Europe.
http://www.bbc.co.uk/news/world-18702455