Air & Space Magazine Natural Selection New Zealand foresters are perfecting a helicopter operation that alows them to preserve forests while they extract trees. Tom Harpole May 1997 ShareCopy linkEmailSMSFacebookXRedditLinkedInBlueskyPrintAdd as preferred source You Might Also Like Across the Divide in 1911 March 1, 2008 Antonovs in America August 1, 2012 The People and Planes of Friday Harbor May 1, 2004 Frozen in Time January 1, 2006 Gear Heads January 1, 2000 Get the latest stories in your inbox every weekday. Email Powered by Salesforce Marketing Cloud (Privacy Notice / Terms & Conditions)