Interesting post! And the bee species facing extinction the most, are the wild ones. These wild bees live solitary and they pollinate plants in a much more efficient way than our well-known bumbling honey bees.
There is also some serious competition going on between them. Competition in which honey bees already hold the upper hand.

Wild bees need ordinary wild plants and weeds. The kind of plants and weeds that grow in our front and back gardens. The ones we don't really appreciate as citizens of the world.

Next to consuming the right products, the wisest thing to do is to start allowing these 'unwanted' plants and weeds to grow in our own backyards. Rather than using pesticides at all. Of course, we cannot do this without cooperation of our farmers. And the more variety there is, the better.
Plus, this might also save us the trouble of a painful back, since we don't necessarily need to spud out all of these weeds anymore ;-)