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Brain activity can be measured using magnetic fields located at some distance from the brain, a technique called magneto-encephalography (MEG). The origin of such magnetic fields are the ionic currents involved in neuronal activity. While these processes are well known at the microscopic scale, it is less clear how large populations of neurons generate magnetic fields.

Unlike the now-ousted green jobs czar, Harvard law professor Cass Sunstein must be confirmed by the Senate.

Here’s the sort of polling Democrats haven’t seen much of in a few weeks. Rep. Larry Kissell (D-N.C.), a freshman who rode into a western North Carolina

The 51-year-old ultra-conservative group, once ostracized by the right, is co-sponsoring the 2010 Conservative Political Action Conference. JBS will have a

The Church and Pike committees of the 1970s exposed CIA lawlessness; created modern legal and congressional intelligence oversight structures; and cleaved the CIA’s history into before and after periods.

Unusual for legislation under such long consideration, substantive portions of the bill remain the subject of intense debate.