The acceptance of a 2C limit for temperature increase, and reference to the scientific basis for doing so. This indicates that science has finally had an influence on negotiators defining what would represent dangerous anthropogenic interference with the climate system.  An agreement was reached between the so-called Basic countries [Brazil, South Africa, China and India] and the US on a tricky issue, which had become a bone of contention particularly between the US and China.  A sum of $30bn has been included in the agreement for funding developing countries' actions during the period 2010 to 12. Is the agreement worth anything? The accord would be worth something only if we build on it with a sense of urgency and take it forward towards a binding agreement by the end of next year. The next step is that the negotiators, and particularly the leaders of major countries, must now get into action to see that we come up with an inclusive agreement involving all the countries of the world. This would require early convening of some meetings under the Conference of the Parties, and a timetable for specific outcomes to be achieved before Mexico. Most popular on the Guardian Today in pictures After advising tourists against travel to the cities of Jammu and Srinagar for nearly 20 years, the Foreign Office has lifted its guidelines after a fall in violence. So, Dal Lake and part of the Valley of Kashmir, one of India's most beautiful regions, are once again