Since the beginning of the Industrial Age, humans have been perturbing the natural world in ways that bring us closer to the pathogens that kill us. (science.sciencemag.org)
Since the beginning of the industrial age in the 19th century, CO2 levels in the atmosphere have increased from 280 parts per million to 380 ppm. (newscientist.com)
The movie is set right at the beginning of the industrial age, so tractors had just been introduced. (dogsnaturallymagazine.com)