Check out these two articles. They profile recent studies on how the health of bees is being affected by toxins in the environment, such as pesticides. They were sent to me by my colleague, Patricia Garcia, in our Quebec office.
To garden naturally, download our handouts on Gardening for Pollinators and Natural Insect Control. Also visit our pages on organic gardening and insects. In addition to what we do in our gardens, put your shopping power to use and buy organic where feasible.