Global warming

Right now I'm not sure I understand the environmentalists who complain about global warming. I live in Southern California, it's almost May, and it's been in the 50s in the day. Over in Ohio where my parents live, and where there apparently is global warming, the weather has been nicer and more Spring-like than here. When my poor parents came to visit this frigid place in March, my mom and I went to Pasadena and forgot our jackets. As we were shivering in our boots, someone with a clipboard standing on the street corner asked us to sign a petition about global warming. We could have used some of that this winter.