(a) The temperature increases by 1°C. How much does it increase in degrees Fahrenheit?

(b) The temperature increases by 1°F. How much does it increase in degrees Celsius?

(c) This is true: I told a reporter that the Earth has warmed by 0.8°C over the last century. When it appeared in print, the sentence said: “Dessler said that the Earth has warmed by 33°F over the last century.” What did the reporter do and why was it wrong?