In the end, the human factor remainsIf you read up a bit, you might get restless: How risk-free is air travel? You need to be logged in to view this content. Please Log In. Not a Member? Join Us Annual subscription "Online" CHF 72.00 incl. VAT Add to cart 3 month subscription "Online CHF 18.00 incl. VAT Add to cart Annual combined subscription "Print & Online CHF 134.00 incl. VAT Add to cart