1. What has Helen done for charity before? 2. What is her most recent challenge, and how is it different?

1. Helen has run the 78-mile Ultra Marathon in Namibia, and she has kayaked 3,200 kilometers down the Amazon.

2. Her most recent challenge is a polar challenge, a 500-mile ski, kite-ski, and bike journey to the South Pole. This is different because she decided to leave the heat of Africa and South America to take part in it.