3 . Last night I was driving from Harrisburg to Lewisburg, a ________ of about eighty miles. It was late and I was in a hurry. However, if anyone asked me how fast I was ________, I’d say I was not over-speeding. Several times I got________ behind a slow- moving truck on a narrow road, and I was holding my fists tightly with________.

At one point along an open highway, I________ crossroads with a traffic light. I was alone on the road by now, but as I ________ the light, it turned red and I braked to a stop. I looked left, right and behind me. Nothing. No cars, no suggestion of headlights, but there I sat, waiting for the light to ________, the only human being for at least a mile in any________.

I started________ why I refused to run the light. I was not afraid of being________, because there was obviously no police-man around, and there certainly would have been no________ in going through it.

Much later that night, after I________ a group of my friends in Lewisburg and climbed into bed near midnight, the question of why I’d stopped for that light________ me. I think I stopped because it’s part of a contract we all have with each other. It’s not only the________ but it’s an arrangement we have, and we trust each other to ________ it: we don’t go through red lights. Like most of us, I’m more likely to be________ from doing something bad by the social convention that________ it than by any law against it.

It’s amazing that we ever________ each other to do the right thing, isn’t it? And we do, too! Trust is our________ preference.

I was so ________ of myself for stopping for the red light that night.

Twenty-four trains, nine countries, 13,500 miles.

They are the numbers behind a train journey one man took from Southampton in the UK to eastern China. Roger Tyers, 37, spent a month on board trains and over $2,500 — almost three times the cost of a return flight — to travel to the Chinese port city Ningbo for academic research in May, 2019. It was the climate crisis that drove this socialist to choose this complex route. Tyers told CNN that he felt it necessary to stop flying when UN climate experts warned last year that the world has less than 11 years to avoid disastrous levels of global warming.

Tyers is not the sole person to avoid air travel in response to climate change. Thousands of people worldwide have publicly promised to stop flying, including teenage activist Greta Thunberg, who has inspired youth climate protests around the world. Activist Maja Rosen started the “Flight Free” campaign in Sweden in 2018 with the aim of encouraging 100,000 people not to fly for one year.

Rosen, who stopped flying 12 years ago, says the “Flight Free” campaign helps fight the sense of hopelessness many people feel when it comes to dealing with climate change. “One of the problems is that people feel there’s no point in what you do as an individual. The campaign is about making people aware that if we do this together, we can actually make a huge difference,” she said.

A passenger’s footprint from an individual flight depends on a number of factors, including how far he flies, how full the plane is, and what class he travels in: First class passengers are given more space than economy passengers, meaning they’re responsible for a bigger part of the plane’s emissions. Tyers said that his train journey to China produced almost 90% less emissions than a return flight.