Herald News: When Mount Hope Avenue was deluged by floodwaters, it wasn`t just bad luck. It was a glimpse of our future in a world changed by global warming, officials with Environment Massachusetts said. "The floods this spring are just a taste of what is to come unless we tackle global warming," said Charles Keller, field associate for the group. "Global warming is making extreme weather events more likely." Environment Massachusetts is a statewide citizens group promoting the importance …