ecologist

Apple, the logo with green leafImage copyrightGetty Images
captionApple image leaves turned green World Earth Day
Chief Policy Adviser Martin Baxter of the Institute of Environmental Management and Assessment also finds cars a smart move for the company, but not necessarily a stand-alone type.

"With the air quality issues in the news, obviously, electric vehicles have the potential to reduce harmful emissions into the atmosphere - if we have the renewable energy sources to generate electricity," he said.

"Apple has a big role in the vehicle, as well as energy harvesting, which makes the process more efficient. It would be an entirely new market for them, and will solve these problems."

Liam, iPhone robot recycling of Apple's, it's all very well, but Mr. Baxter wants to see the company go on.

Liam systemImage copyrightApple
Image captionApple said that his new system of recycling, Liam, would allow him to re-use more components of discarded phones
"They could have done more to maintainability," he said.

"It's great that they can repair the material, but what we want to be more durable product."

This can help to increase sales, but

With Apple, you have to do next?

Apple, reported its first drop in sales in 13 years on Tuesday. Sales were down about $ 8 billion (£ 5,5 billion) compared to the same period last year, and its shares fell nearly 20% in the last 12 months.

Although it is fair to say that the company is still a long way from poverty - it has about $ 200 billion in offshore reserves alone - many see the news as a sign that the winning formula he upheld for so long is not enough any longer.

So, where the next billion-dollar business? BBC asked the experts.

industry analyst

Apple, storeImage copyrightGetty Images
Sales slowed captioniPhone Image
Ben Wood of CCS Insight specializes in looking into the IT industry.

Virtual Reality, which the Executive Officer Tim Cook has already declared the region a great potential, and many Apple rumors, the car can be extremely profitable both for tech giant, he said.

He also believes that Apple can set its sights on the potentially lucrative Indian market.

"Despite the fact that this is a difficult task for the company Apple's, to sell the full price of iPhones in India, the enormity of the population and the potential for adoption of smart phones can not be ignored," he said.

Otherwise, Apple may take on the likes of Amazon and Sky as the main content provider, Mr. Wood stated.

"Apple has a huge cash pile, which would allow to easily acquire the rights to major sporting events, or other hot areas of content," he said.

"Taking into account its ability to distribute content on the vast installed base of wealthy owners of Apple devices, this may be a new direction for the company."