Is the biofuel partly powering this Boeing 747, the future of aviation, or an environmentally damaging publicity stunt?

部分驱动这架波音747的生物燃料是航空业的未来还是一次危害环境的公关特技？

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By investing in the issues that matter most to us, building leaders and lifting our voices in social and policy debates, we are powering the change and the future we want to see for our community.

WHITEHOUSE: Making an Impact Together

But with this keynote, Qualcomm hopes to make a name for itself as a innovative company powering the mobile tech of the future.

CNN: CES keynote: Young people today are 'born mobile'

But for Allen Weiner, a research director at analyst firm Gartner and someone who has followed Yahoo's progress since the early years, the future of search is not going to be purely about the technology powering it.

BBC: NEWS | Technology | Can Yahoo dominate next decade?