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For every 10 ears of corn that are grown in the United States today, only 2 are consumed directly by humans as food. The remaining 8 are used in almost equal shares for animal feed and for ethanol .

Steve Jobs was a rare case, right down to his death. Announced Wednesday, Jobs's death from "complications of pancreatic cancer" only hints at the vast complexity of the disease to which he succumbed at the age of 56.

Steve Jobs was a rare case, right down to his death. Announced Wednesday, Jobs's death from "complications of pancreatic cancer" only hints at the vast complexity of the disease to which he succumbed at the age of 56.

NANTES, France--Knock, knock. That's not the start of a joke but the hard-luck history of Uranus. New research suggests that the giant planet may have suffered two massive impacts early in its history, which would account for its extreme, mysterious axial tilt.

Steve Jobs, cofounder of Apple Computers who died this week, had a reputation as a passionate business leader and a modern folk hero. In 1999 one of Jobs's friends said, "He is single-minded, almost manic, in his pursuit of excellence." That's certainly a character trait we scientists can admire. Let's take a look at another one of Job's traits that we scientists can benefit from emulating.

Steve Jobs, cofounder of Apple Computers who died this week, had a reputation as a passionate business leader and a modern folk hero. In 1999 one of Jobs's friends said, "He is single-minded, almost manic, in his pursuit of excellence." That's certainly a character trait we scientists can admire

Biologist Elizabeth Blackburn grew up in Hobart on the Australian island of Tasmania.

GPS is utterly useless for finding your wife or kids (or even locating yourself) at the mall. What we need is an indoor equivalent of GPS

In the spring of 2005, Steve Jobs gave the commencement speech at Stanford University . It had been a year since he had first been diagnosed with pancreatic cancer

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Key concepts Physical science [More]

Bring Science Home At Scientific American , we appreciate the value of a good experiment. So in May, we launched Bring Science Home as a series of free science activities for parents to do together with their six- to 12-year-old kids. We made sure the activities would be fun and easy to do, so families could complete them in an hour or less and usually with items or ingredients they already had around the house.

For decades scholars and public health officials have known that people with greater income or formal education tend to live longer and enjoy better health than their counterparts who have less money or schooling. The trend holds true wherever researchers look--in poor countries or rich ones, in Europe, Asia or the Americas--but two notable exceptions stand out.

Credit: Wikipedia/NASA NANTES, France--Makemake may well have the most exotic name of the dwarf planets, and it now looks to be just as unusual on its surface. [More]