Comment Re:unbreakable encryption (Score 1) 345
Ah, you mean a one-time pad. Totally unbreakable encryption, but it aptly named, as it loses that quality if you encrypt more than one message with it.
Feed 'Large Is Smart' When It Comes To Cities (sciencedaily.com)
A team of researchers have studied the growth of cities in different parts of the world and have come up with general equations that can foretell their consumption of resources and their contributions to society. The work has debunked the notion that cities act like biological organisms, that once they start they grow, and consume and contribute at predictable linear rates.
Journal Journal: Ethanol And Brazil: The New Global Energy Brand?
When it comes to energy, Brazil is on its way to becoming a "global brand." Although the United States recently outpaced Brazil in ethanol production, Brazil is by far the leader in sugar-based ethanol. Its exports are growing, and it could become a major energy supplier to the world. But what Brazil is particularly known for is its grand conversion-moving almost 40 percent of its automotive fuel from gasoline to ethanol.
Feed Organic Light With No Wasted Electricity (sciencedaily.com)
The long, challenging technological march from the low-power light bulb Thomas Edison invented to the ultimate in a bright and energy-efficient lighting device may finally reach fruition.
