global-warming

Hurricane Katrina struck in 2005 and was twice as costly as any previous hurricane — in addition to more than 1,000 deaths, it caused over $80 billion in damages in the United States. Three years later Hurricane Ike inflicted nearly $30 billion in damages in the U.S. The frequency and size of such storms has raised questions about a possible connection between climate change and economic losses from weather disasters.

Beginning in the 1940s, the “green revolution” increased crop yields around the globe through seed hybrids, increased irrigation and new fertilizers and pesticides. The result was “agricultural intensification,” getting more grain from each acre of land. While the increase in productivity is unquestioned, drawbacks exist as well — negative environmental and health consequences from pesticide use, increased water demand, reductions in biodiversity and increased vulnerability to future famines.

By 2030 electric usage in the United States is projected to grow by more than 30%. Fossil fuels and nuclear power currently produce the lion’s share of our electricity, but in a carbon-constrained world, renewables will have a greater role to play.

The year 2016 was the hottest ever recorded, marking the third consecutive year of record warm temperatures on the Earth’s surface, according to the National Oceanic and Atmospheric Administration (NOAA) and NASA. Of the 17 hottest years in history, 16 have been since 2000. Scientists are unequivocal: we humans are behind global warming.