Groggy delegates and observers arriving today in Barcelona for the final round of negotiations prior to Copenhagen were welcomed by TckTckTck’s cacophony of 1,000 ringing alarm clocks piercing the morning air in front of the Fira Gran Via conference hall.

The chattering alarm clocks served as a literal “wake up call” to the climate negotiators, many of whom veered off the path to the front door to snap pictures and watch the [...]