Complex sentence: In April 2010 he walked across the Sahara Desert before writing "Just Deserts" and in the summer, along with his son, he climbed Mount Kilimanjaro for "Between Heaven and Earth".
Split into simpler sentences: In April 2010 he walked across the Sahara Desert before writing "Just Deserts". With his son, he climbed Mount Kilimanjaro for "Between Heaven and Earth".