April 20, 2023 update: A just released IPCC (Intergovernmental Panel on Climate Change) report says we are going in the wrong direction on climate change, but there is still a narrow window left to avoid a complete catastrophe to our biosphere, and that includes us.
According to an ongoing temperature analysis led by scientists at NASA’s Goddard Institute for Space Studies (GISS), “the average global temperature on Earth has increased by at least 1.1° Celsius (1.9° Fahrenheit) since 1880. The majority of the warming has occurred since 1975, at a rate of roughly 0.15 to 0.20°C per decade. . . . . The data reflect how much warmer or cooler each region was compared to a base period of 1951-1980. (The global mean surface air temperature for that period was 14°C (57°F), with an uncertainty of several tenths of a degree.)”
Adding to this are the growing number of methane sink holes, each releasing several giga tons of gas per day. This growing phenomenon is changing all the current climate projections. Indeed, we might already have reached the climate tipping point.
There was time when we believed that we were the center of the universe and that we should have dominion over the Earth. But then Copernicus came along who asserted that the Sun is indeed the center of our solar system, the Moon being the only body that revolved around the Earth. I’m sure you know that this resulted in a bit of an uproar. As for the dominion idea, our use of resources, over-hunting, and factory farming of animals have contributed to climate change and the current sixth extinction. Watch Marvin Gaye’s video, Mercy, Mercy Me (The Ecology), released in 1971.
The following two photos show a contrast between Greenland’s Tunu Glacier in 1933 and 2013. This melt-back is characteristic of ice all around the world, though melt-back varies widely, depending on location.
It wasn’t so long ago that Carl Sagan and climate scientists started sounding the alarm that we were going down a dangerous path. Subsequent climate data has revealed that those early projections vastly underestimated what was happening, since we now know that climate change is not a linear but an exponential process. That is, it happens faster and faster over time.
The now famous photograph of Earth as a pale blue dot was taken on February 14, 1990 by the deep space probe, Voyager 1, from a record distance of about 6 billion kilometers (3.7 billion miles). The more recent
photograph was taken by the deep space probe, Cassini. Though more striking with Saturn in the foreground, it also shows how Earth is but a spec in the cosmos. As Sagan said in his book: Look again at that dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. (Carl Sagan, The Pale Blue Dot, 1994)
People often say we have to save the Earth. Not so! The Earth will go on just fine without us. The issue is preserving the current biosphere that supports us and the other higher vertebrates. There will always be life on the planet so long as there’s liquid water. As I present every year, here is my fictionalized account of our worst scenario. Let’s do better!