On today’s show, Julie Burstein fills in for Leonard Lopate. Find out why some environmental groups have come out in favor of policies that some say harm the environment more than protect it. Then, we’ll get the latest on the science of same-sex animal attraction. Also, we’ll take a look at plant biodiversity in the New York metro area and why species from the south are overtaking our native plants. Plus, out latest Please Explain is all about sugar!