We arguably are in the middle of a major extinction event. It's just happening so slowly (as measured on human timescales) we don't notice it happening. We ha

We arguably are in the middle of a major extinction event. It's just happening so slowly (as measured on human timescales) we don't notice it happening. We have entered the Anthropocene era, marked by humanity's impact on the planet. Fully 38% of the arable land is now farmland of one stripe or another. We've more than doubled the nitrogen production rate. Oceanic biomass has plummeted precipitously. Development is wiping out native species; biodiversity is falling (however a countervailing argument says that the spread of invasive species may counterbalance the loss of native species).