The following was published in the Biddeford-Saco?Journal Tribune Sunday edition, 8/21/2016, and?Making It At Home's 8/24/2016 issue.

August 21^st is my 38^th birthday. The odometer keeping track of my trips around the Sun just rolled over 22.2 billion miles. Theres still plenty of tread on the tires. I am beginning to notice a few twinges of maturity, though. Joint pains, hair loss, reflexive stubbornness, the irrepressible need to give advice  the signs of creeping codgerdom.

Where I once found adults among Olympians, NFL players, and movie stars, I now see& a bunch of kids. The numbers back me up. Based on 2014 Census data, I am now officially in the older half of the U.S. population. Staring at the graph, I cant help but think that its all downhill from here.

Which is a silly thought, because so far lifes been pretty good. Theres no reason to think that things will get worse. Many people tell me that the second halves of their lives were more fulfilling and rich than the first; theres research out there that backs that up.

Looking back through history, I cant name another era into which Id rather have been born. Certainly the 20^th Century had its horrors, but I think the achievements of our naked ape species in the last 100 years far outweigh them. Empirically (in both senses of the word), has America ever been any greater than now? Sure, weve got problems, but as one Internet billboard recently proclaimed: things arent coming undone - theyre just getting uncovered. And thats the first step in addressing them.

Truth be told, the only thing that really concerns me about the second half of my life is climate change. Im someone who trusts scientists, and what theyre saying doesnt bode well for my golden years, or my childrens and grandchildrens lives either. Every update of the predictions for temperature, rainfall, flooding, sea level rise, ocean acidification, and species disruption seems more urgent than previously projected. Im beginning to think that my next 38 years are going to be more eventful than my first 38.

According to a recent visiting lecturer to the Wells Reserve at Laudholm, were overdue for a major hurricane to hit Maine. When one does, our coastal communities from Kittery to Portland will look like Louisiana this week. Lobsters are slowly moving north into deeper and international waters. Our forests are under siege from all manner of invasive pests.

Its also getting weirder out there. It can rain two inches in the middle of a drought. The pond hockey season is shrinking; the ranges of Lyme disease and Zika virus are expanding. Anthrax and nuclear waste are thawing out of the Siberian tundra and Greenland glaciers. It was recently hot enough in upstate New York for horse poop to spontaneously combust.

Well, at least the oceans gotten warm enough up here to swim in comfortably for hours on end.

Ive heard about all these changes because the coastal science and education organization I work for studies and cares about such things. (Well, maybe not the horse poop so much.) The Wells Reserve also has a birthday coming up: were turning 30 on August 31^st. I can proudly say that were not even half done with our existence, of course. Theres no time or place wed rather be working in either. To many more!

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Nik Charov is president of Laudholm Trust, the nonprofit partner of the Wells National Estuarine Research Reserve in Wells, Maine. His occasional column, Between Two Worlds, ventures forth from the intersection of art and science, past and present, innocence and senescence. More at wellsreserve.org/twoworlds.