Most people know that bees are vital to the worldwide ecosystem. But did you know that there are about 4,000 species of bee in the US alone? They pollinate hundreds of thousands of plant species, bringing biodiversity to the world and to our grocery stores. But the use of pesticides and diminishing green space are a threat. 1 in 4 wild bee species in the US is under threat of extinction. Fortunately, you can help them to thrive! Making your backyard ...