Dear Avalon Climate Change Spouter It’s important to check the facts - do you know there are only 5, yes five, ice samples that are believed to provide the evidence for gas changes in the atmosphere ? It’s hard to find 200 million year old ice - compression, melt/refreeze, contamination - all threaten the quality of ice. Remember we didn’t measure temperature until the thermometer and the F/C scales were invented. So the Vikings migrated as it got colder. Does that mean it was warmer in the Arctic regions earlier ? Look up Utzi (found under a glacier) he went up in the Alps before dying