Climate tweets for 7 May 2014

Stanford University Will Purge Coal Investments From $18.7 Billion Endowment: http://thinkprogress.org/climate/2014/05/07/3435130/stanford-divests/
[divestment]

Report: Climate change effects extreme for California: @mydesert
http://www.desertsun.com/story/news/politics/2014/05/06/climate-change-report-california/8788503/
[National Climate Assessment, science]

Impact of Climate Change On U.S. Midwest: More Heat, More Droughts, More Floods, Fewer Crops
http://thkpr.gs/1o6OjoX
[National Climate Assessment, science]

7 scary facts about how global warming is scorching the U.S.: @motherjones 
http://www.motherjones.com/environment/2014/05/national-assessment-climate-ameriica
[National Climate Assessment, science]

It's game over for KeystoneXL pipeline: @MichaelEMann: @guardian
http://www.theguardian.com/commentisfree/2014/may/06/keystone-xl-pipeline-vote-senate
[oil, tar sands]

Climate Change Forecast to Worsen U.S. Ozone Pollution: @Environment_New
http://ens-newswire.com/2014/05/05/climate-change-forecast-to-worsen-u-s-ozone-pollution/ 
[air pollution, science]

RT Andrew Freedman ‏@afreedma  19h
The front page of today’s @nytimes marks a milestone in U.S. climate covg., IMO. 
http://pic.twitter.com/IGE13e5pkm
[National Climate Assessment, New York Times, science, journalism]

“Oklahoma burning”: Heat ignites temperature records, wildfires in Southern Plains: 
http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2014/05/05/oklahoma-is-burning-heat-ignites-temperature-records-blazes-in-southern-plains/ 
[fire, heat waves]

Tropics widening, drought threat grows

A new study in the scientific journal Nature suggests that two human-caused pollutants, black carbon aerosols and tropospheric ozone, are causing the boundary of Earth's tropics to expand, a change which may worsen drought in the subtropics. According to Climate Progress: "Led by climatologist Robert J. Allen, an assistant professor of Earth sciences at the University of California, Riverside, the research team notes that an unabated tropical belt expansion would impact large-scale atmospheric circulation, especially in the subtropics and mid-latitudes. "'If the tropics are moving poleward, then the subtropics will become even drier,' Allen said. 'If a poleward displacement of the mid-latitude storm tracks also occurs, this will shift mid-latitude precipitation poleward, impacting regional agriculture, economy, and society.'"