In new ads, ski company says global warming could dry up snow during the next century... The Aspen Skiing Co. hopes potential customers are ready for a snow job. On Wednesday, the company unveiled a new advertising campaign for the 2006-07 season that centers around the message that snow — and skiing — will disappear around 2100 if humans don’t take drastic action to slow global warming. Three full-page ads, which show a melting snowflake imposed over Highland Bowl, will run in SKI and Outside magazines in the next few months. One ad portrays a “certificate of death” for snow....