Steve Curwood is the host and executive producer of Living on Earth . His pilot of the show aired in the 1990, and now, 27 years later, he says the majority of the climate issues that he addressed on that first program -- the state of the oceans, energy choices, environmental justice -- have become more significant problems. Curwood says the only issue that has improved is the public understanding of climate change. This hour, Curwood joins us for a conversation about social equity, climate