Derk writes articles, stories and specialized texts about walking and other subjects, sometimes with colleagues.
Example on walking:
This year the book 'Healthy Daily Walking' will be published (ebook and print). The story behind daily, ordinary walking. About the health benefits for body and mind. How to save money. How to get more business opportunities. How citizens can take initiative. How governments determine and can encourage walking, if they wish. And ideas for the future: going on foot is simple, appealing and affordable for many people.
Interested? Sign up and get a publishing deal.