this post was submitted on 07 Oct 2023
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Both things can be true. They aren't mutually exclusive.
Also we have less pollution and pesticide use than we did in the 60s and 70s. Why is it just becoming a problem now?
less pollution? that cannot possibly be true. according to dr google 1970s world population was 3.7b, now we're more than double that
I’m the US, the EPA was created in the 1970’s. We definitely have less pollution (of certain types) today than we did in the past. Some notable examples of how disgustingly polluted American skies and waterways were in the past:
The skies of Pittsburgh, PA
the Cuyahoga River fire
Coal Production has also been declining
And then of course less visible examples like the Montreal Protocol stopping corporations from depleting the ozone layer.
My point is in terms of greenhouse gas production we are much higher than in the 60’s and 70’s, but we have massively improved in a lot of areas. Of course there is still room to improve.
I bet that while we have less general pollution and less dumping trash in the environment kinda things, we have developed much more potent insecticides. And if those insecticides do not degrade within a few weeks they will accumulate in the earth and the water.
Edit: Wikipedia about one type of modern pesticides: https://en.wikipedia.org/wiki/Neonicotinoid
Yeah, pretty sure your lawn has almost nothing to do with insects vanishing. It's much more likely the insane amounts of highly potent pesticides we put directly into our food chain. Those pesticides obviously aren't classified as pollution so we aren't polluting, we're killing the environment on purpose.
Btw. The development and use of neonicotines corelate quiet nicely with the drop in the insects population.
To put that in perspective, let's say I drink water contaminated with chemicals for decades. Then, "suddenly", me and half the people i know are sick with cancer and various side effects decades later...
That's how environmental toxins work. They accumulate throughout the water cycle and through the food web, and if its less than acute (short term) in effect it statistically hurts a population, such as lowering reproduction or creating birth defects that lower the fitness. Then, once concentrations pass LD thresholds (lethal dose, meaning LD50 will kill half of the individuals of a species on average, LD10 would kill 1 in 10) you start getting mass die offs
Every water table, all of the soil, every living being is riddled with non-naturally occurring substances. Even though we released more damaging toxins in the 80s, the rate of pollution doesn't matter - the concentration in various parts of the ecosystem is what matters, and that's a slow process