50 years ago was 1970. In 1980 Cosmos: A Personal Voyage came out. A companion book came out the next year. In it, Carl Sagan warns about the dangers of global

50 years ago was 1970. In 1980 Cosmos: A Personal Voyage came out. A companion book came out the next year. In it, Carl Sagan warns about the dangers of global warming. We knew. Climate science 50 years ago was good enough to identify this as a problem. Al Gore decided to be Clinton's running mate in part due to how HW Bush was handling environmental issues. Issues he was bringing up in Congress since 1976 when he was first elected. Once again, we knew. We also knew that the best time to get a handle on the problem was then.