More UN agencies than stars in the sky:

The World Metrological Organisation (WMO) had this piece of good news:

WMO Greenhouse Gas Bulletin 2005: CO₂ levels highest ever recorded
(posted on 3 November)

In 2005, globally averaged concentrations of carbon dioxide (CO₂) in the atmosphere reached their highest levels ever recorded. The World Meteorological Organization’s (WMO) 2005 Greenhouse Gas Bulletin, published today, says quantities of CO₂ were measured at 379.1 parts per million (ppm), up 0.53 per cent from 377.1 ppm in 2004.

According to the BBC coverage of this press release:

"There is no sign that N2O (nitrous oxide) and CO2 are starting to level off," Geir Braathen, a senior scientist at the WMO, told reporters. It looks like it will just continue like this for the foreseeable future."