For some getting old may feel like a burden. But for many old age is full of triumphs.
BBC World Service Online
Could buses be the solution to the mass transportation needs in the next decade?
Everywhere there are plans to build high-speed railways. But do the numbers add up?
Will eBooks push old-fashioned volumes with paper pages off the shelves for good?
Looks at the strains and pressures on charities as people cut back on donations.
Microsoft on where computing's going. And was Scrooge right?
Is it true that banks have a social purpose and that bankers are doing God's work?
How the banks will cope with commercial property loans that have gone sour.
The penalty of starting a career in a recession. Plus Lucy Kellaway on dogs in the office.
If tough regulation drives finance firms from London, is that a "price worth paying"?
Who should pay for CO2 emitted when products are made? Consumers or the factory?
GE has decided to invest in wind energy because it says there's now money to be made.
Trading in carbon is likely to grow but can it actually reduce global warming?
The work of economist Paul Samuelson, including one of his last interviews.
Why Britain's best known investor Anthony Bolton is delaying retirement to go to China.
America's compensation czar on how he enforces the pay ceiling in failed companies.
The co-founder of Twitter, Biz Stone talks about Google and how to make a profit.
300 years ago, Abraham Darby used coal to make iron. We go to where it happened.
ENEL and BASF, two of the world's biggest companies on what they want from Copenhagen.
Can America achieve a renaissance of its nuclear industry?
We report from America on "clean coal technology". Delusion, or answer to global warming?
Pfizer's head of research explains how decisions are made on which drugs to develop.
What does Dubai's fall from grace mean for its ambitions to be a global powerhouse?
Are we in danger of cutting current living standards unnecessarily to stop global warming?