In fact, there's every reason to think that they'll only get worse, and that's what it would look like if things just stayed the same, at the same linear rate, over the next 20 years.
Faktisk, der er al mulig grund til at tro at det vil blive værre, og dette er hvordan det vil se  ud hvis tingene bare fortsætter, men samme lineære rate,  i de næste 20 år.