The Ogden-headquartered bank actually signed on as a trustee for a plane owned by Russian natural gas oligarch Leonid Mikhelson in a deal that allowed him to avoid paying $12 million in taxes. On top of that, according to the investigation, the bank’s involvement increased the jet’s resale value by giving Mikhelson access to the US jet registry.

For everyday travelers, the situation around ethics, climate change, and financial feasibility is much more straightforward. In fact, slow travel has become trendy enough that travel sites often encourage users to focus on travel by train or bus, while environmental groups are boasting about the movement’s sustainability. While some refer to it as “flight shame,” organizers aim to get people to review their travel habits.

Choices around slow travel can be important. A traveler choosing a mass transit option versus gas-hungry, small-occupancy vehicles makes a big difference. Chris Field, the director of the Stanford Woods Institute for the Environment at Stanford University, told The Washington Post that a single pickup truck can have a similar fuel economy to a private jet. He argued to the newspaper that traveling in both methods is environmentally irresponsible.

However, given the globalized economy and increasing interconnectivity of business, air travel has become difficult to avoid for many. That’s where the industrial race toward creating sustainable aviation fuel (SAF)—and companies like CleanJoule—come…