Tracy is on the Rainbow Warrior, which is in India to highlight the impacts of climate change and what we can do to stop it. You can follow all the tour updates on the Ban the Bulb blog, and we'll be posting tour highlights here.

We set off early for the southeast corner of Sagar Island, where the task today was to plant 8,000 mangrove seedlings along the shore to help hold back the advancing seas. This is an experimental plantation project started by Professor Sugata Hazra, head of oceanography at Jadhaupur University.

He says that the Sundarbans delta is already experiencing the worst of climate change. Sea levels are rising faster here than the global average and the intensity of cyclonic storms and monsoon rainfall has increased.

From the Rainbow Warrior, which is in India to highlight the impacts of climate change and what we can do to stop it. You can follow all the tour updates on the Ban the Bulb blog, and we'll be posting tour highlights here.

I've never wanted to be a celebrity, always loved my anonymity, so being welcomed to Sagar Island by 12,000 people was a bit overwhelming.

We sailed from Kolkata at three in the morning so by noon we were well down the Hugli and approaching the Bay of Bengal. The "meeting", as it was described to us, to welcome the Rainbow Warrior to Sagar Island was due to start in the early afternoon and the Warrior was still a few hours away. We launched two inflatable boats to take us to the northern tip of the island and we would go the rest of the way by jeep to beat the ship to the Sagar Ganges beach.

I'm in Calcutta! Wow, what a mad place - dodging traffic, choked pavements, goat herding in the city centre, streets filled with sleeping bodies at night, fantastic food, friendly people - it is a little overwhelming.

I'm here for the next month helping out the India office and I'll be joining the Rainbow Warrior when it arrives in Calcutta, or Kolkata as it is now known. We'll be sailing down the coast to look at the impacts of climate change and what can be done in India to stop it.

I arrived Sunday night and while I was sleeping off my jetlag the next morning, the local activists were up early and out for a swim in the Hoogly river. They tied more than 200 life rings together to spell "Ban the Bulb" to bring their bulb campaign to Kolkata. Now, I know that doesn't seem like a big deal, but the Hoogly makes the Thames look like a crystal clear spring. First there is the human waste, and if you can get past that, then you might run into the charred remains for someone's loved one who has been set to sea from up river, or if you're really unlucky - the not completely charred remains.

These are either some of the bravest, or the craziest, activists I've ever met. They've been for their shots now, but it will be a month before we know if they picked up anything other than local media coverage from the day. You can support them by emailing the Indian Minister of Power and asking him to take action.