THE EAST COAST IN AUTUMN

Autumn brings shorter days and cooler nights - at first a welcome relief from summer's heat. But as the temperature drops further, each day becomes more precious. This is especially true on the east coast of the US - home to some of the craziest weather on the planet. Chris Mulhern has been roaming around Philadelphia and Baltimore lately, capturing the sense of urgency as the region takes advantage of every last sunny day before winter sets in.