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...supercomputers in analyzing and responding to market data. The owners of these supercomputers, investment firms such as Goldman Sachs and Citadel Investment in Chicago, employ special proprietary algorithms to interpret the data and execute transactions - all in less time than it takes a human to conjure a thought. Already, various forms of high-frequency trading, taken together, account for more than half of all trading now taking place in the U.S. Critics say the practice can raise the cost of trading for typical investors and contributes to market volatility. (See pictures of 10 scared stock traders...
...research, published in the journal Nature, would suggest that the mass movement of marine animals - even tiny zooplankton like krill - may play a significant role in churning the ocean. It may help mix cooler water with warm, and disperse salts, nutrients and pollutants across the various layers of the ocean, which is critical to the strength of ocean currents and the health of the marine ecosystems. Although ocean-mixing is largely attributed to winds and ocean tides, scientists say those factors cannot account for all the energy required to power, for example, the complete circulation of cold and warm water...
...discourage driving - and it would generate revenue that could be used for a number of green programs, including cash for clunkers. Certainly, efficiency is an important goal - a new report from McKinsey & Co. found that the U.S. economy could save $1.2 trillion through 2020 by investing $520 billion in various efficiency investments - and encouraging the switch to less wasteful cars is smart policy. But unless we end the era of cheap gas too, those savings will go down the drain...
...that brings together biology with engineering, mathematics, computer science, and physics. Kirschner compares systems biology to engineering: “When we ask how an airplane can fly stably in all different kinds of conditions, we are close to the kind of question of how the human body in various environments can also avoid crashing...
...comedy than James Bond. I gave the regime the best and most powerful lines. I would have to settle for the part of the trickster, a rogue Br'er Rabbit racing through the streets of Tehran. For several weeks I went underground. I continued to send dispatches back to various publications and websites in the U.S. using a rotating set of email accounts registered under outrageous pseudonyms. On Facebook I took on an alias worthy of an old-school rapper. Certain that every word was being monitored, I embarked on a crash course in Internet and PC security, schooling myself...