This slide here, the black line shows the measurements that scientists have taken for the last 150 years showing that the Earth's temperature has steadily increased, and you can see in particular that in the last 50 years there's been this dramatic increase of nearly one degree centigrade, or almost two degrees Fahrenheit.
En esta diapositiva, la línea negra muestra que las medidas que los científicos han tomado en los últimos 150 años denotan cómo la temperatura de la Tierra ha ido aumentando de forma progresiva.