"The most fundamental question in climate science"

Bob Park's Dec. 5 WN had text:

It [Triana] was meant to answer the most fundamental question of climate science: what is the energy balance between solar radiation falling on Earth and reflected or reradiated energy? Global warming deniers all claim solar variation is the major factor in global climate change. Is it?

Separately, Bob had nothing further to say about cold fusion in the Dec. 5 WN.