Now to a scientist looking back at the year that's about to end, commentator Adam Frank is an astrophysicist. And in the category of science, he is confident about the headline for 2012.
ADAM FRANK: Something remarkable has happened that may etch this year into history for centuries to come. Twenty-twelve's importance comes not through elections, economic shifts or the new movements in art. No, 2012 may well be remembered for something far more elemental.
This was the year that climate change got real for Americans.
United Nations climate talks ran into overtime on Friday night, as diplomats pressed for whatever small advantage they could achieve.
As usual, the talks, which are being held in Doha, Qatar, involve closely interwoven issues. They include the usual wrangling over money, as well as early efforts in a multiyear process that is supposed to result in a new climate treaty.
Part of that involves finding a graceful way to phase out the Kyoto treaty, which has not proved to be a successful strategy for dealing with a warming planet.
Superstorm Sandy sparked a lot of interest in rising sea levels when it swept across the Northeast last month and flooded parts of the coast. Over the next century, more water — and higher sea levels — could come from melting ice in Greenland and Antarctica. How much has been unclear.
But now scientists have developed a much clearer view of how quickly that ice has been melting over the past two decades. And that will help researchers forecast the rate of sea-level rise in the years to come.
Climate change and the environment were not major topics of the presidential campaign. And on Wednesday, President Obama said that while he believes more needs to be done to address what's happening, he won't "ignore jobs and growth simply to address climate change."