Danish publicist and writer on climate change Bjørn Lomborg noted that John Kerry has both used a private jet and defended its use, stating that the US President Joe Biden's "climate envoy" is personally demonstrating just how difficult and complex it will be to reduce emissions.

Appearing on TV, the aforementioned publicist (Bjørn Lomborg) explained that this is how John Kerry demonstrates the contradictions and complexity of solving climate issues. Namely - even those people who publicly promise to do everything to reduce CO2 emissions do not do so, using both cars and planes in their daily lives.

"In reality, our personal choice to "do the right thing" has very little impact on the situation," Lomborg explained.