One down, 99 to go: the clock is ticking at the Labour conference © Will Rose

Today might be your run-of-the-mill Tuesday with nothing more remarkable than the news that a rover on Mars will take two years to travel 11km, plus a slight smattering of rain. But according to the New Economics Foundation (NEF), today is more significant than you might expect because it's the point in the year when we've used up all of the resources the Earth can produce and we start going into ecological debt.

Benet (right) joins Climate Clinic's 'Coal vs Renewables' debate

One of the great traditions of British politics is the seaside conference. It is sad to think it might soon be a thing of the past. In 2007 all three political parties held their conferences in seaside resorts; this year the Climate Clinic only needs its bucket and spade once – for the Lib Dem Conference in Bournemouth.

Greenpeace scientist Dr Doug Parr speaking at the aviation fringe event

Wow! This conference is busy. For the last two days I have been running between fringe events, private meetings with ministers and - well - some parties.

So, a quick catch up on the Greenpeace conference campaign. Firstly our fringe events. On Monday we ran a large event on decentralised energy, which included a screening of our film "A Convenient Solution". The London Mayor - Ken Livingstone - spoke, as did the Energy Minister Malcolm Wickes and our very own John Sauven. It was a packed meeting which still managed to get into some of the detail on decentralised energy. If we are going to solve the climate challenge we are going to need real ambition.

Today Brown will deliver his first conference speech as Prime Minister, and you can't help but feel the excitement amongst Labour delegates. All the talk is about whether he will call a snap election.

Last night I was at the Social Market Foundation event and had a long chat to John Denham - the minister who notably resigned over the Iraq war in 2003. Now he is in the Cabinet as Secretary of State for Innovation, Universities and Skills. He gave me some very good reasons why Brown might want to call an election sooner rather than later - mostly to do with the amount of money in the Conservative Party war chest.

As Labour start their 2007 Conference in Bournemouth today, all the talk is of a possible General Election. Every opinion poll gives Gordon Brown a big lead. A critical polling question is ‘Who would make the best Prime Minister?’ Brown wins hands down. He scores 54 per cent compared to David Cameron on 21 per cent.

I am writing this on the fast train from Brighton to London, heading back home from the Lib Dem conference. A much quieter day generally today, although last night was as busy ever.

I have been looking out for an old friend of mine - Mark Webster - who used to be an ITN correspondent. He has just taken a job as Ming Campbell's official spokesman: the Lib Dem's answer to Tony Blair's infamous spin-doctor, Alistair Campbell. But while Campbell was an ultra-tough media manipulator, Mark couldn't be fairer or friendlier.

We've just had a great aviation debate. Michelle di Leo, from Flying Matters (the big pro-flying lobby group) was up against Simon Montague from Eurostar, Doug Parr from Greenpeace, and Lib Dem transport spokesman, Susan Kramer MP.

Talking before the event, Susan gave me her view of the Tory's Quality of Life report - which John wrote about on his blog. She thinks they haven't gone far enough on aviation, wind power or nuclear. To misquote Mandy Rice-Davies, she would say that wouldn't she. The Quality of Life report was co-authored by Zac Goldsmith - who is running as the Tory candidate in Richmond (Susan Kramer's constituency). If she welcomes it, it would be as good as endorsing her opponent. It is the one side of politics which really annoys me: the need to take opposite views on vital issues because of short-term tactical advantage.

A beautiful day in Brighton this morning! There were blue skies and sunshine as I walked along the seafront for my first meetings. There is no better way to start the day.