Today - believe it or not - is exactly 80 days until the last day of the UN Climate Change Conference in Paris on Friday 11th December. I'm reminded of Jules Verne's classic "Around the World in 80 Days".
Verne's novel starts with an early autumn gathering of "highly respected personages", including many "princes of English trade".
At the meeting, Phileas Fogg wagers 20,000 pounds that he can circumnavigate the globe in 80 days, returning to London by Saturday 21st December.
This time, it isn't just 20,000 pounds at stake, but the chance to give the world a sustainable future - both environmentally and economically.
Unlike Phileas Fogg - today's global challenges like climate change don't carry passports. And they certainly don't stop politely at national borders.
With the UK responsible for 1% of global greenhouse gases - and the EU making up 11% - we'll certainly need to do our bit.
But global challenges need global solutions. And the only hope for a lasting solution will be to work with other countries from around the world.
This is why Paris is so important.
So first-off, why does business care about this?
Well, as any CEO will tell you - making decisions is all about weighing up the 'costs' and 'benefits'. On climate change, both the 'costs' of doing nothing and the 'benefits' of seizing the business opportunity are clear.
So here's my first question.
What happens if we don't make progress?
What happens if we stick our heads in the sand and just hope it all goes away?
Well, the 'costs' are as clear as they are catastrophic.
For businesses, the 'value at risk' costs could exceed four and a half trillion pounds by the end of the century.
Supermarket chain ASDA estimates that 95% of its supply chain could be at risk from changing weather patterns and increased extreme events - which are both accelerated by climate change.
And we've already seen how global technology companies in the US - in particular - had to stop trading when flooding in Thailand shut down the factories they relied on.
But besides the 'costs' of inaction, the 'benefits' of seizing the opportunity and growing the green economy are also clear.
We know the UK's green economy has sales of over 120 billion pounds a year.
And whilst people might describe 'China' or 'India' as 'emerging markets', the green economy is a high-growth 'emerging market' in its own right.
Between 2010 and 2013, the green economy grew at more than 7% a year, compared to less than 2% a year over the same period for the UK economy as a whole.
Today, 164 countries have renewable energy targets.
That's 164 potential markets worldwide for the UK's renewable industry - for example.
We're already seeing British firms seizing these global opportunities - like Fosters designing the zero-carbon 'Masdar city' in Abu Dhabi or Blade Dynamics designing and exporting the world's most advanced wind turbine technology.
And the green economy has so much more potential - whether it's renewable power, low-carbon transport, sustainable goods and services or ideas which haven't yet got off the drawing board.
A global climate deal can turbo-charge this.
On climate change, avoiding the costs and seizing the benefits means taking the right action.
Since 2009, we've come a long way.
The cost of solar and wind have plummeted. Electric vehicles - once 'science fiction' - are now becoming 'science fact'. And developments like smart grids and the 'Internet of Things' are transforming modern life.
And here in the UK, our emissions are falling and our economy is growing.
We've seen real progress - from both industries and individual firms.
We're seeing industries like steel, cement and glass - which use a lot of energy and produce a lot of carbon - setting out how they can reduce their emissions in the long-term.
And companies like Unilever are already making the small changes which make a big impact. Compressing their deodorant packaging - for example - has already saved over 16,000 tonnes of CO2 from entering the atmosphere.
We've also seen progress in the last parliament.
We've built on the 2008 Climate Change Act to develop policies which will eventually decarbonise our economy.
In fact, the Climate Change Act is a great example of how - by showing leadership in efforts for a global solution on climate change - the Government helped give business the certainty they need to invest.
And - it's important to say - that over many years, the UK has built up real credibility on climate leadership and low-carbon investment.
This is hard won, but easily lost.
And despite the progress so far, today's investors are more uncertain about the UK's low-carbon future.
From the roll-back of renewables to the mixed messages on energy efficiency, these changes send a worrying signal about the UK as a place for low-carbon investment.
Moreover, this seemingly weakened commitment risks impacting our standing on the global stage, at the exact moment we need to stand up and be counted.
Yet in the last seven years, we have seen progress on the global scene.
Whilst in 2008 the UK was the only country with a Climate Change Act - other countries have now followed suit - from Finland to Mexico.
Indeed - one of the big lessons from Copenhagen was that change can't be imposed on countries.
The drive for change needs to come from the ground-up.
So far, 55 countries have made commitments to the UN through their 'Intended Nationally Determined Contribution'. An unexciting title hiding the fact that these 55 countries cover 60% of global emissions.
In Europe, the 2030 targets are in place, with the Emissions Trading System supporting reductions.
China, the world's largest emitter of carbon dioxide has a plan to cap emissions by the end of the next decade, or sooner.
And India has just raised the target for its national solar mission from 22 to 100 gigawatts by 2022.
100 gigawatts - that's 25 times India's current solar capacity.
And in the United States, President Obama's Clean Power Plan - which should survive legal challenge - will cut America's power sector emissions by almost one third by 2030.
Looking forward to Paris, I believe that we are in a better place politically than we were six years ago.
Our political leaders won't be heading to Paris expecting to thrash out all the details at the last minute - as was the case in Copenhagen.
We know there's still hard work to be done - but negotiators have been working hard for months already. More groundwork has been laid and there's a much better understanding of nations' concerns.
At the moment, one of industry's biggest worries is that if some countries go further or faster than others, it undermines competitiveness.
This is a real concern. In 2014, British industry faced the fifth highest power costs in the IEA, while our energy intensive industries are paying 56% more than the EU average.
Yet if all countries pull in the same direction, we can make sure that - where there are costs - the burden is shared more evenly. And Paris could give firms the certainty, clarity and confidence they need to invest.
Above all - Paris will be a crucial opportunity for every nation to play their part to tackle climate change and help accelerate the low-carbon market in which businesses can grow and innovation can flourish.
In 80 days - we want to see negotiators heading back to Charles De Gaulle airport with three 'wins' in their back pocket.
First - a long-term foundation for reducing emissions, with agreement on how to ratchet up ambition on a regular basis.
Second - a commitment to driving forward carbon pricing around the world. Whilst a truly global carbon market might not be realistic in the short-term, it must remain our long-term ambition. Paris must support this.
And third - a solution for making finance and innovation more accessible. Today, just 10% of climate finance flows from OECD countries to developing countries. We must make sure developing countries can access the financial support they need for low-carbon energy and adaptation measures - especially from the private sector.
So these are the three things that business wants to see.
But in getting a deal in Paris - we must not sacrifice the good in the name of the perfect.
I hope Paris can offer is a way to assess nations' efforts and show that they are meeting the goals they themselves have set.
Regular reviews will be important for making sure that countries - and the world - are on track for an ambitious reduction.
And where more can be done, countries should be pressed to do so, safe in the knowledge that everyone is pulling their weight.
At the end of Verne's novel, Phileas Fogg returns to London thinking that he's too late - and he's lost the bet.
When - at the 11th hour - his valet reminds him that as he's travelled East around the world, he's still got a day to spare.
In the real world, we can't rely on 'chance' to save us at the last moment.
Avoiding tomorrow's 'worst-case-scenarios' means taking action today.
Here and now.
But Paris won't be the end of the journey - it's the next step.
It's a chance to give businesses long-term clarity, drive investment and innovation and raise our ambition for the future.
Like Verne's novel, the journey won't be easy.
Many challenges lie ahead. And many questions still remain.
How can we help developing nations get the support they need?
How should nations be required to show that they're cutting emissions?
These questions need answers, but of equal importance is to keep our eye on the prize.
And it's important that business adds its voice to the chorus of organisations and individuals speaking out here today.
Politicians and negotiators should be confident that business is behind them. But business also needs to be confident that a Paris deal will provide the long-term certainty they need to deliver the solutions to our global problems.
So 80 days from now - on 11th December - I want the ink to have dried on a deal in Paris.
Like most things in life - the deal won't be perfect.
Imperfection is the price of negotiation.
But by working together, I'm optimistic that we can drive ourselves towards the pro-growth, low-carbon future that business wants and the planet needs. Let's make this happen.