With the decision on Heathrow’s third runway expected this year (honest), the atmosphere in Westminster is heating up.

Both opposition parties have come out strongly against the third runway; rebel Labour backbenchers are increasingly joining the opposition; there are signs that the cabinet is split over the decision; and the new transport secretary Geoff Hoon has called for a parliamentary debate on Heathrow expansion next Tuesday.

All of which means there are now two new opportunities for us (by which I mean you…) to intervene and make the opposition felt in the corridors of power.

Flashmob at Heathrow's Terminal 5.

Upcoming events for all those opposed to further airport expansion:

• 16 Nov: Direct Action Training in West London

• 17 Nov: Public Meeting in Chiswick

• 29 Nov: 'Are you listening Gordon?' Stunt in Hounslow

• 6 Dec: National Climate March

Nick, in a survival suit. © Will Rose / Greenpeace

See all Rainbow Warrior tour updates or get them by email.

I'm not sure where to start. In the past 24 hours, I've watched senior advisers to the shadow cabinet take a ride in one of our inflatable boats (wearing Greenpeace-branded dry suits); mopped, swept and wiped all manner of surfaces; talked to artists, designers and film producers about our work and the coal campaign; learned how to coil rope properly; donned a survival suit during safety training (see the picture of Nick, resplendent in similar garb, above); helped to take down a giant banner; eavesdropped on energy policy discussions with advisers at the heart of Labour's government; and cleaned a lot of toilets.

I think I'd better start with the Tories, who visited the Warrior this afternoon. They were here not to have the mickey taken out of them as they got into the inflatable boat ("when we get to parliament, you three unfurl that banner and the rest of you storm past the guards" etc) but to talk about energy policy with our chief scientist, energy campaigners and policy wonks - just as Labour advisers did this morning.

Remember the Paper plane flashmob outside the Department of Transport? Looks like it might have finally woken Ruth Kelly up to the deluge of NOs that have been levelled at her ridiculous expansion proposals and has prompted her to delay a decision on the plans. Obviously she hasn't read the messages thoroughly or else she'd have scrapped plans for expanding Heathrow altogether.

Special Conference on July 26th 

In recent news: The Arctic sea ice melt began significantly earlier this year than last year. UK's CO2 emissions higher than official figures, government admits. CO2 emissions up by nearly a fifth in 12 years. Avoiding climate change is affordable, says PWC.

And yet, still, the government plans to build new coal plants and, of course, new runways.

This week's been busy for me, what with two demonstrations on two different campaigns. After the protest outside the Japanese Embassy, it was the Department of Transport's turn to welcome us. The government wasn't listening when we said NO to Heathrow's third runway last month. So this morning, we flashmobbed the Department of Transport and launched paper planes saying ‘NO AIRPORT EXPANSION' at transport secretary Ruth Kelly's office.

If you thought that the Terminal 5 flashmob and the Big NO! was all that would be done to oppose the third runway then you were wrong. On 3 July, get ready to flashmob once more and launch paper planes at the Department for Transport, and tell transport secretary Ruth Kelly why plans for the third runway must be scrapped.

Download a paper plane here and don't forget to write a message to Transport Secretary Ruth Kelly on it. The plan is to turn up outside Department for Transport (corner of Marsham St and Horseferry Road) at 11am sharp. If you've still got your red t-shirts from T5; even better but a paper plane is an absolute must. At 11.03 (precisely) those wearing ‘Stop Airport Expansion' t-shirts will reveal them, and then we will all launch our paper planes in the direction of the Department.

Just a quick reminder to everyone who's been supporting the Stop Heathrow expansion campaign - don't forget to come along and add your voice at the Make a NOise carnival this Saturday. Decision time is fast approaching for the government - and they need a major reminder that if they are serious about tackling climate change, then 'NO' is the only sensible answer to the aviation industry's plans for unfettered airport expansion.

It’s Transport Minister Ruth Kelly's 40th birthday, and just now seven women from Sipson were at the Department for Transport to give her a birthday cake. But the message is less traditional, it's a big fat, creamy, sugary NO – well that's the shape of the cake anyway. They also sang happy birthday in the reception and staff got NO cupcakes.

You too can send Ruth Kelly a birthday message. She's in charge of Heathrow expansion, so send her a message asking her to join the Make a NOise carnival on May31st.

Help create the biggest and loudest NO the world has ever seen!

The campaign against Heathrow expansion is already huge; there've been rallies, direct actions, flash mobs and an incredible 70,000 responses to the consultation (more on that shortly).

But an agenda for colossal airport expansion and colossal climate change demands a colossal response, and we want to make sure the plans to expand Heathrow receive the biggest and loudest NO the world's ever seen. Literally. A great big NO spelt out by human bodies, which we'd like to set a new world record as the biggest and loudest NO in the world.