Climate talks by the numbers

193 — Countries sending delegates to the Copenhagen climate talks.

119 — Heads of state attending the final day of talks Friday.

1st — Where this summit ranks, in terms of the number of heads of state attending, among U.N. conferences held outside New York.

40,000 metric tons — Estimated amount of greenhouse gas emissions generated by the conference, including emissions produced by airplanes bringing delegates to Copenhagen (equivalent to the annual emissions of 2,000 Americans).

40,000 metric tons — The annual emissions of one of the convention's least-polluting member countries, the Pacific island nation of Kiribati, according to U.S. data.

700,000 euros — The amount of money the Danish government will spend to "offset" the conference's emission, by paying to replace outdated brick kilns in Bangladesh with new Chinese-designed ones that consume less coal and emit fewer greenhouse gases. That's about $1 million.

One-third — The number of Copenhagen residents who commute to work on bicycles, according to the city (less than 1 percent of Americans do).

20 percent — The amount by which the city of Copenhagen cut its carbon emissions between 1995 and 2005, according to news reports. Among its changes: making buildings more energy-efficient, buying power from offshore windmills and making a bike-friendly city even friendlier.

2025 — The year by which the city of Copenhagen has pledged to become "carbon-neutral."