A huge merger on the drug maker front...And: concerning news on the world economy...Here's Claire Leka with your Money Watch report.Two drug giants are joining forces.Merck is scooping up Schering plough for 41 billion dollars.The new company will be called Merck with expected cost savings of three and a half billion dollars a year.Merck makes the popular asthma drug Singulair. Shering plough makes the allergy drugs Nasonex and Claritin. The two have also teamed up on the cholesterol lowering drugs Vytorin and Zetia.Japan's benchmark Nikkei closed at its lowest level in 26 years overnight amid anxiety over the world economy.Investors are waiting on the outcome of a meeting between the us auto task force, gm, Chrysler and officials from the united auto workers in Detroit today after auditors raised doubts about gm's ability to survive outside bankruptcy.The world bank predicts the global economy will shrink this year for the first time since world war II, and sees trade at its lowest point in 80 years.That while economists say the recession is on track to be the longest in the post war period.After 60 years in business-circuit city closed its doors for good yesterday.More than 34-thousand employees are out of work and more than 18 million square feet of retail space is now vacant.Circuit city filed for chapter 11 bankruptcy protection in November, but was never able to bounce back.That's your money watch, log on to CBS news dot com, in NY, I'm CL.