Do Christians need to obey Old Testament laws?

I found this question via FriendlyAtheist, who shared this big pdf file (poster size, but only 1.6Mb), with a list of questions, each answered in various ways in different parts of the Bible, and a graphic showing links between the different areas where the different answers occur.. To my title question, the poster shows:

gen 17:19, exo 12:14, 17, 24, lev 23:14, 21, 31, deut 4:8-9, 7:9, 11:1, 11:26-28, 1chron 16:15, ps 119:151-2, 119:160, mal 4:4, mat 5:18-19, lk 16:17 ≠ lk 16:16, rom 6:14, 7:4, 6, 10:4, 2cor 3:14, gal 3:13, 3:24-25, 5:18, eph 2:15, col 2:14
Those of us who don't know all the verses need a convenient way to look them up, like http://bible.cc I've linked two of the sample verses, above. I like the parallel view, showing each verse in 15 popular English Bible translations.

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Avoid Swine Flu, the Science-Guy way!

Swine flu has captured the attention of the nation, including calls from European health officials to restrict travel to the US. It's all rather overblown, because almost everyone* has the ability to avoid the flu and it's symptoms. Just follow the directions in the video, courtesy of Bill Nye, the Science Guy! * the exception is immune-compromised individuals.

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What it means to feel certain: review of “On Being Certain”

Consider these words of George W. Bush, spoken in Rome, in 2001

“I know what I believe. I will continue to articulate what I believe and what I believe — I believe what I believe is right.”

This is not an isolated case. These sorts of fact-free assertions occur all the time. Consider another example, this one a hypothetical. Assume that you overhear some guy claiming that homeopathic medicine [or fill in the blank with your own favorite snake oil treatment] is effective and powerful. Because you suspect that he doesn’t have his facts right or that his reasoning is unreliable or invalid, you speak up and question his statement. He responds by saying something like the following:

I’m certain I am correct. I’m absolutely sure that I’m right. I have no doubts about this.

Despite the many claims of certainty that we hear, we often remain unconvinced, and for good reason. There’s a saying, “Show, don’t tell.” Show me the facts so that I myself can see whether I am certain. Don’t just tell me that you’re certain. Nonetheless, people constantly make claims that are based on inner feels of certainty, quite often wild and unsubstantiated claims about politics and religion, as well as claims about science, history or just about everything else.

People often use such claims that they have a “feeling of certainty” as bootstraps to convince themselves that they are even more certain than they actually are, thereby completely dispensing for the need for meticulous …

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