British adventurer Karl Bushby is currently nearing the final stretch of a journey that has spanned 28 years and thousands of miles. After departing from his home in Hull, England, back in 1998, he is now working to complete the final leg of his 36,000-mile trek, which aims to be the longest unbroken walk in human history. As reported by the BBC, Karl’s journey has been anything but straightforward. He has navigated continents, crossed the treac…