The Eureka, a modern-day Zeppelin that has run tours above the Bay Area, is leaking cash because of the sky-high price of helium. Airship Ventures, which began flying the airship in 2009, will suspend operations and issue refunds to passengers who’d booked flights on the vessel. Unless a sponsor can be found. It costs $5 million to sponsor the vessel for a year, so the CEO is hoping to get area tech giants like Apple, Facebook, Oracle or Google to foot the $5 million bill to keep it aloft. There's a “save Eureka” campaign on Facebook and Twitter.