You're going to read a blog by TV presenter Helen Skelton, who has taken part in several charity challenges. First, read the introduction and answer the questions. 1 What has Helen done for charity before? 2 What is her most recent challenge, and how is it different?

According to the introduction, Helen Skelton has run the 78-mile Ultra Marathon in Namibia and kayaked 3,200 kilometers down the Amazon, from Nauta in Peru to Almeirim in Brazil.

Her most recent challenge is a polar challenge: a 500-mile ski, kite-ski, and bike journey to the South Pole, the bottom of the world. This is different from her previous challenges because it involves traveling to the South Pole and using skis, kite-skis, and bikes in a polar environment.