As bad news continues to roll in regarding the accelerating impacts of greenhouse gases accumulating in the atmosphere, there is increasing discussion about imposing a carbon tax. Economists across the political spectrum support it, from Irwin Seltzer’s camp that remains “uncertain as to whether there is a global warming phenomenon” to William Nordhaus, who unequivocally views climate change as a threat.

The Paris Climate Agreement sets forth a bold goal to reduce greenhouse gas emissions, keep global temperature rise below 2.0 degrees Celsius, and employ best efforts toward no more than 1.5 degrees of warming. It also sets forth a new set of rules to achieve these goals. [Video Below]

As early as 1911, coal miners in Britain carried caged canaries into mining pits. Any sign of distress from the small birds, which are incredibly sensitive to the presence of harmful gases such as carbon monoxide, meant immediate evacuation. Today’s canaries in the coal mine are low-income, minority communities whose exposure to environmental risks in the United States and elsewhere puts them at the frontlines of the global climate crisis.

The climate agreement reached in Paris last December, seen by many as a critical step toward lowering greenhouse gas emissions, was big news – perhaps too big. Pointing to the thousands of articles about COP-21, National Geographic Senior Editor Marla Cone asked at a recent Wilson Center panel, “Is this a wise use of resources, when newsrooms are so stretched thin, to have everybody pretty much chasing the same stories?”

In December 2015, Beijing issued its first-ever “red alert” for smog, its highest air pollution warning, which closed schools and restricted the number of cars on the road. Less than two weeks later, it issued its second.

January 7, 2016 could hardly have been worse in this thunderously beautiful, water-parched, and economically reeling nation of 55 million residents at the bottom of Africa.

The good news out of Paris is that the world is finally getting serious about reducing greenhouse gas emissions. Here are a few reasons to cheer and one quibble.