Did you also know that pesticides are rendering these insects endangered?
Bees Matter is a great website to learn more about bees and what you can do to keep them alive and striving. I highly recommend you go over there & take a look. They have a ton of infographics & articles too.
Friends of the Earth also have several interesting articles on the bee situation around the world.
The Honey Council has even more information and some good resources.
What can you do to help? Order a free flower kit from Bee's Matter or go to the dollar store & pick up a few of the ones pictured on their front page (near bottom) and plant them anywhere you see some dirt.