By curious coincidence August 6th is the day the Church remembers the Transfiguration of Jesus (see Mark's account here). It is an event where three of the disciples see Jesus as he really is. This experience transfigured their understanding, and indeed their relationship with Jesus.
It is also the 45th anniversary of the bombing of Hiroshima. I often make the association that we are equally well transfigured by that event.
That awful event set before humanity the possibility of us being able to destroy ourselves. In a real sense it probably coloured the perceptions of baby-boomers for good or ill, and we were told in the last decade that the Generation X/Y kids found the likelihood of total human destruction all too likely.
It's worth giving a thought to both events today.
What is perhaps more amazing is that we have actually survived 45 years without blowing up the world.