E&E News PM headlines —

SPOTLIGHT

1. CLIMATE

Carbon milestone a reminder of things to come -- scientists

The Earth's atmospheric carbon dioxide levels passed an ominous milestone yesterday when a National Oceanic and Atmospheric Administration observatory on the Big Island in Hawaii registered 400 parts per million for the first time. It's a concentration of CO2 that has not existed in the Earth's atmosphere for at least 3 million years, and it could be enough to trigger 2 degrees Celsius in warming compared with preindustrial levels.

THIS AFTERNOON'S STORIES

Upcoming markups and hearings

Advertisement

E&E Interactive

E&E's Power Plan Hub

Compiled Coverage by Issue

Power Shift: Election Transitions
Global Climate Debate
Drought
Oregon Standoff
Fiscal 2017 Budget and Appropriations

E&E Special Reports

Musical Chairs: Committees 2017
Off Topic
Meet the New Members 2017
Climate's Nuclear Meltdown
Deep Underground
BUSTED: the last oil boom?
National Park Service:100 Years
Swing State Snapshot
Heating up in the Heartland
Ukraine Hacking

E&E Services

Learn More About E&E
Start a Trial
Receive Email Alerts
Staff Directory
Employment Opportunities
Announcements

Advertisement

Latest Selected Headlines

More headlinesMore headlines

More headlinesMore headlines

More headlinesMore headlines

More headlinesMore headlines

Latest E&ETV Videos