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Presidential health: "Need to know" is subjective

How much do voters need to know about a presidential candidate's health, and what information should politicians be obligated to share?

The New York Times takes an in-depth look at those questions today, concluding that candidates are sharing less medical information now than in some recent elections, despite candidates' previous health concerns. According to the article, the presidential and vice presidential candidates have only released limited and, in the case of GOP veep pick Sarah Palin, no medical records to date.

We know from a May review of some of John McCain's medical records and from previous reports that the Arizona senator has battled the most deadly form of skin cancer melanoma. His physician says McCain, who at 72 would be the oldest man ever sworn into a first term as president, has not  displayed any memory problems, but she has not said whether her patient has undergone cognitive tests.

McCain and Obama camps latch onto new media (with varying degrees of success)

Barack Obama's campaign has dissed his opponent John McCain for his supposed lack of computer competence. While some have come to McCain's defense, a new study indicates the Obama camp is making better use of technology than McCain's people are.

A recent study by Pew Research Center's Project for Excellence in Journalism finds that Obama was first to use the Web as a campaign tool; the think tank says McCain's crew has finally gotten on board, recently adding a social networking component and other new features. Too little too late? Looks that way, says Pew, noting that Obama’s online social network of registered users is more than five times larger than McCain’s, according the sites’ own accounting, and his site draws almost three times as many unique visitors each week.

Obama and McCain on science: Where do they stand?

Newly minted Republican vice presidential nominee Sarah Palin has made clear she's open to teaching creationism in public school science classes and to oil exploration in the Arctic National Wildlife Refuge (ANWR). While her running mate, John McCain, has spoken up on some science issues (pro-off shore drilling, anti-opening ANWR to oil exploration), less is known about his positions than those of his Democratic opponent Barack Obama, who recently answered a series of questions on everything from climate change and energy to stem-cell research.

Some highlights: Obama says he would lift a ban on federal funding of research on embryonic stem-cell lines created after Aug. 9, 2001 -- a measure signed into law by President Bush, who vetoed legislation designed to lift the limit. Obama also supports genetic engineering of plants and "water smart" landscaping over irrigated lawns to conserve H20, according to his responses to questions from Science Debate 2008, a consortium of Nobel laureates and business leaders.


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