alt Hacker News>This represents a change over a mere ten year period.
For our, city dwellers, perception changes over 10 years may be unnoticeable, while over longer periods - that is how about 4 decades look in my hometown in Russia (one though need to be at least 50 years old to feel the changes happening over 40 years :)
https://news.ycombinator.com/item?id=18948971
Where is, naturally, even a 1/4th of such changes is noticeable and meaningful for industrial agriculture.
Not noticeable??
2016, the day after election day. I took a picture out the front door, there was a "dead" (leaves dead, roots will come back next year) yam plant in it--completely normal, they were always dead by November. Next time we elected him there were still some green leaves into January. Last winter they did not winter kill at all.
And this year we did the Fletcher Canyon hike 6 weeks early. Should have needed snowshoes, in reality microspikes were desirable for the last few feet. Even last year you would have been laughed at for suggesting it in March, this year there was one woman in the group wearing not much more than a bikini. And most of the high summits have been reported clear weeks ago.