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Humans began altering natural world 6,000 years ago

Scientists have found an abrupt change about 6,000 years ago in how terrestrial plant and animal species coexisted, right about the time human populations were ballooning and agriculture was spreading around the world. The findings suggest that human activity had reached a tipping point where hunting and farming were impacting the natural world in irreversible ways — changes that have …

drought

Your Winter Vegetables: Brought to You by California’s Very Last Drops of Water – Tom Philpott

California’s drought-plagued Central Valley hogs the headlines, but two-thirds of your winter vegetables come from a different part of the state. Occupying a land mass a mere eighth the size of metro Los Angeles, the Imperial Valley churns out abouttwo-thirds of the vegetables eaten by Americans during the winter. Major crops include broccoli, cabbage, carrots, cauliflower, and, most famously, lettuce and salad mix. And those aren’t even …