ClimateWire: A new study has found that the wavy jet stream pattern that tends to bring warm winter weather to the U.S. West and cold weather to the East was set in place 4,000 years ago.
The research, published in the journal Nature Communications, also suggests that climate change may help keep the wavy pattern in place.
"It's possible the kinds of changes we are seeing with increased jet stream sinuosity might continue into the future as a result of anthropogenic CO2 emissions, although it's not a perfect...