The airlines said they had not been given new delivery dates for the planes, which Boeing has touted as its most energy-efficient and economical airliner to date.

BBC: Boeing warns customers of 787 Dreamliner delays

Imagine online videos that teach people how to perform day to day tasks in a way that is more efficient and economical and that also helps them develop valuable work-related skills.

FORBES: Connecting marketers to the Forbes audience. What is this?

These efforts help the non-profit sector become more effective, efficient with better and more economical programs.

FORBES: Social Entrepreneurship: A Fundamental Game Changer

Just two index funds like the Vanguard Total Stock Market and Total International Stock Index provide effective, economical, tax efficient global equity diversification.

FORBES: Dealing With A Crummy 401(k) Plan

The second green car featured was an efficient diesel: the Citroen C4 which can be more economical, and as good as the best hybrid.

BBC: NEWS | Programmes | Breakfast | Low carbon family: "Green" cars