nbernard Karma 457 Created 16 years ago Recent Submissions 1. ▲ Nitrogen, Ammonia, and the Strait of Hormuz (science.org) 7 points · 15 days ago · 0 comments 2. ▲ Synthetic aperture radar autofocus and calibration (hforsten.com) 201 points · 5 months ago · 16 comments 3. ▲ How to Make a Longbow (howtomakealongbow.co.uk) 144 points · 11 months ago · 41 comments All submissions on HN · View profile on HN