Flight 253 and the Missed Signs of Terrorism

The 23-year-old son of a banker from Nigeria should have tripped every alarm in the global aviation-security system put in place after 9/11: He bought a $2,831 ticket for flights from Lagos to Amsterdam to Detroit and paid for it in cash. He left no contact information with the airline

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New Genes Discovered for MS

The best way to understand a disease is to get at its root cause, and most of the time, that means hunting down the genes that trigger it. In three papers published this week, researchers report that they have identified two new genes that may contribute to the immune disorder multiple sclerosis .

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