This Facebook page is wonderful, do take time to look through it. It offers many other links to Bee Awareness too.
You may want to sign this petition
This is fun – how to build a bumblebee nest
This seems to be an excellent Dutch site from the university of Utrecht regarding the decreasing numbers of bees. It is also written in English and French so we can all engage with it.
And this one is from Harvard School of Public Health. They will be following this up the study, due to be published in June 2012