The battle to become Britain's greenest party reached fever pitch this morning, and gosh wasn't it exhilarating? The Guardian gets particularly overexcited (Miliband launches landmark climate change bill), telling us that:

"Britain's first ever climate change bill is published today, setting legally binding targets on the reduction of carbon emissions for the first time."

And just to prove how young and hip he is, David Miliband even launched the bill on YouTube.

This follows yesterday's twin announcements from Gordon Brown and David Cameron on how best to preserve our planet, whether it be through carbon limits or increasing air passenger duty.

We also found out, in the Times (Two rival visions that put the planet at the heart of policy), that Gordon Brown turns his TV off standby in the evening and Cameron's new home will have both wind turbines and solar panels, so I for one feel in safe hands.

However, wasn't there something missing from all this? It seems the green battle is only two-sided. As Liberal Democrats, we are used to the right-wing media prioritising certain political parties over others, but it's particularly needling when both camps seem to be following policies originally set out by the Lib Dems. Chris Huhne makes a rather feeble attempt to redress the balance in the Indy (We must monitor carbon targets annually), broadly supporting the Bill, but trying to distinguish himself by supporting annual targets (over 5 year ones) and suggesting that we may have to increase the 60% target. The environment used to be a Lib Dem stalwart, but increasingly this position is faltering.

If, as looks likely, the next election is fought largely over environmental policy, the Lib Dems need to prove their credentials, and quickly.

Also in today's news:

• Trident revolt grows as minister resigns (Independent)
• Compulsory language lessons to return (Telegraph)