In fact, we have a few: climate change, terrorism, nuclear proliferation.
They are also making a few climate change sceptics hot beneath the collar.
The deal will be described as "politically binding", rather than "legally binding", as nobody except a few climate anoraks really understands the difference between the two concepts.
A few climate skeptics will get more than their share of media attention, but they will not dent the underlying science.
But earlier this week, Rajendra Pachauri, the chair of the IPCC, said there was "virtually no possibility" of a few climate scientists biasing the advice given to governments by the UN.
Since Obama's climate legislation failed to get through a Democrat-controlled Congress, the election of a few climate change-denying Tea Party candidates last month does not feel like the end of the world.
A few climate scientists contend that the modelers are engaged in a circular exercise with little meaning, building complex simulations of an even more complex real world that contains many features -- at scales ranging from ocean currents to cloud droplets -- that shape climate while still defying scientific understanding.
However, such relation is usually found using only a few simple building models and considering only a few climate regions.
In addition, a national-local agreement was effective from 2007 to 2011 in which the local government committed to national ambitions on climate change policy, which was mostly concerned with climate change mitigation efforts, but also included a few climate change adaptation goals.
(If the polar bears came into town they might like to snack on a few climate skeptics. That must sound mean but the skeptics would not mind at all. Even as they were being swallowed whole they would shouting: "This bear does not exist. I am not being eaten". Or: "No problem. Being eaten by a bear is just part of a natural cycle").
