Bloomberg: President Barack Obama’s top climate negotiator said calls for wealthy nations to pay as much as 1 percent of their gross domestic product to help emerging economies tackle climate change are “wildly unrealistic.” “It’s going to be important that there be financing assistance provided,” Todd Stern, the White House special envoy on climate change, told lawmakers today during a House panel’s hearing on international climate treaty talks. Some of the demands being made are “untethered to …