New York Times: A future generation lithium-air battery might be the much sought after power source for electric vehicles with ranges that match gasoline powered cars of today. The interest in the as-yet-unproven technology was underscored this summer when I.B.M. said it had begun to pursue a tenfold improvement in battery storage, with hopes of reaching the goal before the end of the next decade. I.B.M. executives said the company was unlikely to enter the battery business directly but was …