If the climate never changed, then none of us would be participating in this Winnipesaukee forum. 10,000 years ago, the climate changed, a glacier melted and created Lake Winnipesaukee. Here is an article that describes this:
https://www.laconiadailysun.com/boat...3a8814057.html
Now rather than focusing on climate change as the primary cause of the lakes current problems (which may or may not be true), your efforts would be much better served to hold the local towns and DES responsible to be better stewards of protecting the lake. Pulling back the curtain on the town of Alton and how they have addressed a major development project in West Alton would be a good start. We used to live there but we now moved to Virginia because of this. People need to wake up and protect the valuable resource called Lake Winnipesaukee.