David Long, Author at 91av Science news and science articles from 91av Fri, 03 Aug 1990 23:00:00 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.1 242057827 Waves, tides and tsunamis /article/1819910-waves-tides-and-tsunamis/?utm_campaign=RSS|NSNS&utm_content=currents&utm_medium=RSS&utm_source=NSNS Fri, 03 Aug 1990 23:00:00 +0000 http://mg12717284.400 1819910