The five Climate Chaos caches are:
The earth is changing. Driven by man's relentless demand for
fuel, the planet is warming up. Storms rage across the globe, flash
floods sweep away whole valleys and villages, droughts force
migrations and wars, forest fires destroy vast areas, and
governments seems powerless to act. Meanwhile, the chilly silence
of the polar wastes is broken by loud cracks as thousands of tonnes
of ice break free and begin to float towards warmer waters.
There is hope. The famous scientist, Professor Dyson, has a
plan. He has assembled a crack team of brilliant minds to work on a
solution - carbon-free energy. His vision is for every man, woman
and child on the planet to have their own energy source, utilising
revolutionary new technologies. For this to be achieved, he needs
specialised, esoteric skills. 
And so
he has engaged 3 people, sworn to secrecy, to work with him on the
project. Rupurt Ursus, a brilliant mathematician, is supplying the
theoretical framework. John Vickers, a remarkable engineer with
experience at the CERN Laboratory, is designing the prototype.
Strangely, the third member of the team is rumoured to be Dawn
Whicker, the esteemed New Age spokeswoman. Like the others, she has
not been heard from for some time.
But there is trouble ahead. The shadowy Mobexx organisation has
become aware of the Professor's research. They know that, should he
succeed, their nefarious global powers of influence and corruption
will be weakened. 
This cannot be allowed to happen.
And so, dozens of Mobexx agents, equipped with the latest
surveillance technology, have gone out into the field, to find
Professor Dyson and his team and stop them - at any cost.
Will Mobexx succeed? Or will the team be able to create the
revolutionary new energy source, and make it available across the
world, in time to save the planet? No-one knows. But it seems the
Professor has got wind of the plot against him & his project:
an e-mail from the Professor to his team has been leaked via the
internet:
"None of us is safe anymore. We need to hide our
findings for now.
We need to go public as soon as possible, as soon as I've got your
final contributions. I don't want to say too much in this medium,
so let's seek some guidance from a bit of alchemy:
Antimony.Barium.Polonium + Caesium + Radium + Tantalum + Thallium,
Strontium - (Zinc + Oxygen).Helium. Plutonium + Cerium
Keep communications as infrequent and as secret as possible, until
you hear from me. Keep your wits about you, and remember: crystals
are the key - they make everything work."
Experts have debated what this might mean. Is this some magic
formula for a new fuel or has the Professor finally flipped?
You will need:
GPSr
Paper & pen
The ability to throw off a tail.
A sense of adventure