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A new engine design could significantly improve fuel efficiency for cars and SUVs, at a fraction of the cost of today’s hybrid technology.
The advanced-biofuels industry is in danger of withering away.
Several ex-NASA officials are behind a company that plans to offer trips by 2020.
Orbiting spacecraft could be refueled with water taken from planetoids—but some experts doubt the economics.
Cars with advanced batteries get 100 mpg and boast far greater range than all-electric vehicles.
Does society really want extremely private mobile devices if they make life easier for criminals? Apple’s newly toughened standards sharpen the focus on that question.