10 ms·

You're absolutely wrong. Here are two examples of human activity having global, negative effects: 1. Our use of CFCs caused global ozone depletion: https://en.

• ommunist 11y ago
  1. Never heard of mass extinction of penguins caused by the Great Antarctic Ozone Depletion. Antarctic plankton (very _basic_ thing in that ecosystem) is also not depleted. So? What 's so global about that? 2. That one is grossly exaggerated to force people buy some gasoline products. There are local impacts on local human populations, but this is not a global problem and can never be. Total area of all cities and motorways is just 0,5% of land. Everything humanity built on this planet is negligibly small if properly scaled. Here is what can do a real climate change, for example (and it did). Cyanobacteria long time ago consumed most of "greenhouse" gases from our precious atmosphere and produced oxygen is such quantities that massively extinct themselves, leaving some nice fossils still visible in Australia. Humanity is not even close to that scale of activity.
• nmrm2 11y ago
  Apparently there are STILL people who think 1 is uncontroversially false -- see the slide deck posted by cpr on this page.