"Senior GOP statesman George Shultz urged Republicans on Friday to be proactive on climate change, calling it an "obvious risk" to the economy and national security.

The former secretary of State for President Reagan says that rising temperatures could be addressed through an inexpensive "insurance policy," similar to Reagan's support for restrictions on gases that degraded the ozone layer in the 1970s and '80s.

In this case, Shultz supports a revenue-neutral carbon tax that would begin small and slowly increase. He often points to melting sea ice in the Arctic as a sign of changes to the climate."

Evan Lehmann reports for ClimateWire July 14, 2014. [2]