River rushes to the battle Stone and rock stand firm Water's nearly endless troups Dash themselves on the ramparts Shards everywhere The roar of battle consumes Continuing through the seasons Ice and rain the combatants ignore Time is meaningless The river breaches the defences Continues its march to the sea

Flying Wind rushes Trees race by Engine purrs-- breathes life Frail freedom Ground rushes up All things must end.

Today I want to talk about time travel. Wells, Heinlein and many others have stories dealing with time travel: however, untill recently respectable physicists have regarded time travel as a fantacy. However new quantum gravity studies have given some credence to this wild idea.In fact there are theoretical physicists who have been writing about time travel in the pages of 'Physical Review' recently. Time travel has been considered impossible, Newton beleived that time was like an arrow o...