The left arm was almost stretched completely out, then redecorate for SF, Pia Olsen Dyhr, on Friday night to take a selfie. It was necessary to get all in the picture.

There was rare consensus at Christiansborg palace in copenhagen, when an agreement on a new klimalov was adopted. The elected representatives had to stand close to could be in the forevigelsen.

One of Denmark's leading climate scientists came with and noticed the broad smile that went from Morten Messerschmidts (the Danish people's Party) face of Dan Jørgensen's (environment minister, the Social democrats) to the Rasmus Nordqvists (the Alternative).

For there is really something happened in a very short time, says the professor at DTU Kirsten Halsnæs.

"I notice most know how enormously happy politicians look out compared with the situation after the budget bill was negotiated, where there were some who saw the sure out. That, I think, is very funny. You see, it seems here like a very constructive option for Denmark," she says.

the Smiles are the expression of a changing world, says the professor, who has expertise in the economic consequences of climate change and sitting in the Nobel prize-winning international klimapanels inner circle.

For while the climate change conference in Copenhagen in 2009 fell to the ground, when over 100 heads of state and government left the Danish capital without the solutions to the world's climate problems, then the political will is now completely different.

But most importantly, according to Kirsten Halsnæs, organisations such as the Danish Industry has responded positively to the klimaloven. For it is here that the real change must come from.

"That business has promised to take the leader's jersey on, I look like a total revolution. Klimaloven declares that the targets are binding (Denmark is required to deliver 70 percent reduction of greenhouse gas emissions in 2030 compared to the level in 1990, red.), but in reality it is firms that translate objectives into practice, when they change production and exports," says Kirsten Halsnæs and continues:

"the Industries are put in the world to make money, and they can see that there is now a solid framework to do something as well as that framework even is quite far-reaching and different than what you see internationally."

Kirsten Halsnæs explains that the agreement provides the companies a market, which is essential for businesses with a good dose of security will invest in the green transition.

Klimaloven be tabled in Parliament in February next year, and it must be followed up by a klimahandlingsplan with concrete climate action in the spring.

It will be here that the real swords must stand when the politicians should point to, how CO2-reduction, the concrete is achieved.

Kirsten Halsnæs therefore looks also forward to following the outcome of the political negotiations. For the ambitious reduction of CO2 emissions does not come without further ado.

"Are you willing to do much, you can probably achieve it, but to get up to 70 percent can be difficult."

"There are no concrete plans yet, and they are the ones who are going to be interesting," says Kirsten Halsnæs.