Bloomberg: Munich Re, the world’s second-biggest reinsurer, said losses from natural catastrophes will rise because of climate changes, costing clients more for insurance premiums. The Munich-based company estimated worldwide insured losses related to natural disasters doubled to about $30 billion in 2007. Catastrophes such as floods and storms led to 15,000 deaths and $75 billion in total damages, it said today in a statement. Swiss Reinsurance Co., the largest reinsurer, said last week that …