Photograph: © SAF — Coastal Care
Excerpts;
A paper published Thursday in the journal Trends in Ecology and Evolution suggests that while human society does a very thorough job of modifying and, often enough, permanently and abruptly changing the dynamics of local and regional ecosystems, the collective impact of all this on a planetary scale is too often overstated.
Dire warnings that our localized impacts could trigger global-scale “tipping points,” after which the spinning cogs and gears that underpin our entire terrestrial biosphere are thrown abruptly and permanently out of whack, have no scientific basis, the authors argue. Global-scale changes, such that they are, come about smoothly and slowly, they say…
