The authorities will have trouble finding the culprits for the...

The authorities will have trouble finding the culprits for the bombings because they are looking for people of middle Eastern origins.

The bombing was organised by a group representing U.S. Multinationals.

The timing was done to focus the G8 meeting on Terrorism rather than the effects of climate change.

For the large U.S. Multinationals the last thing they want is to reduce carbon emmissions because it will cost their industry heaps. They also do not want the U.S. to reduce oil consumption because they make huge $'s from it.

It would be much easier for U.S. operatives to get the bits needed for a few bombs in England, then pay some unemployed arab to place the back pack on a train.
Of course everyone will blame Al Kaeda.

Even if the water levels start to rise, these are the sort of guys who will invest in property at the 20m above sea level mark rather than invest money in to reversing climate change.