Here you are trying to equate a local one day variation of 50 degrees with an average global annual temperature. Eye roll indeed.I myself am not so sure. My container blueberry bush almost died when I took it in last winter. And although it survived, the lack of a sufficient chilling period resulted in no berries this year. Considering that fruit is the strategy many plants use to reproduce, it doesn't take much of an imagination to project a pretty big die-off of plant species if the climate gets warm enough.
We are talking about people asking for "Bermuda shorts in Buffalo in January" weather, remember. That's a 50 degree increase. I doubt the last ice age reduced average temperatures by anything close to that much.
Edit: I wanted to check my guess, and a fast Google found this:
Quote:
The Earth is ancient. Scientists estimate that it is about 4.6 billion years old. Over all those years, the climate on Earth has changed back and forth between warm and cold. At times, the Earth has been a tropical, humid place. But now and again, the Earth turned cold and wrapped itself in sheets of ice. These cycles of warm and cold take millions of years. They are caused by changes in the way the Earth orbits the sun and how it tilts on its axis, which affect how much of the sun's heat reaches the Earth. The last great cold cycle, which we know as the Ice Age, ended about 10,000 years ago.
During the Ice Age, the Earth's average temperature was about 12 degrees Fahrenheit colder than it is today.
12 degrees. And you're "confident" that 50 would be no problem.
This must be the motto of some here.
Facts in, garbage out.