Our ship docked in Halong Bay, and I've had a lot of recent coverage because of our  Diamond Princess cruise through this area , so I will today focus on Fusion, the greatest hope for sustainable energy into the long-term future,  Today, only a history. There are two kinds of nuclear reactions. Fission:  splitting a heavy nuclei, like Uranium.  An Atomic Bomb gets energy from fission. Fusion:  joining light nuclei, like, like isotopes of Hydrogen, Deuterium and Tritium.  A Hydrogen Bomb uses fusion. Some  fusion history . In 1920, British physicist Francis Aston discovered that the mass of four hydrogen atoms is greater than the mass of one helium atom, which implied that energy can be released by combing hydrogen atoms to form helium. This concept provided the first hints of how stars produced energy. Henry Russell observed that a star's heat came from a hot core rather than the entire star. Mark Oliphant, working with Ernest Rutherford and oth...

  I've previously been to Anchorage twice in my life, both during the period of the longest day, when the sun never did set.  The first time was around 40 years ago.  To quote from my   24June2018 blog . I remember the previous and only other time I was here in Anchorage, maybe a third of a century ago, also around the longest day.  I participated in a hydrogen conference at the University of Alaska, and after that was over, joined a salmon fishing expedition.  Paid a fortune to be taken by van with eight others a two-hour ride away to be dropped off at a river.  It was a total disaster  There was only about a 50-yard portion of a river, where there were a hundred or more fishermen.  Only native Americans can fish wherever they want.   We were provided a long pole, line and a hook with some cloth material attached to it.   At this time of year the salmon returning upstream do not eat.  You need to irritate them so tha...