Forty Signs of Rain — Kim Stanley Robinson

When the Arctic ice pack was first measured in the 1950s, it averaged thirty feet thick in midwinter. By the end of the century it was down to fifteen. One August the ice broke.

The next year the breakup started in July. The third year it began in May.

That was last year.

It's a muggy summer in Washington, D.C., as Senate environmental staffer Charlie Quibler and his scientist wife, Anna, work to call attention to the growing crisis of global warming. But these everyday heroes fight to align the awesome forces of nature with the extraordinary march of technology, fate puts an unusual twist on their efforts--one that will place them at the heart of unavoidable storm.