Peak carbon dioxide levels surpass 411 parts per million for May
Strategies sought to mitigate greenhouse gases
CO2 levels increasing at a faster rate than before
Leader of Keeling Curve measurement says temporary bump from El Niño could push atmospheric CO2 levels above symbolic threshold for good
Scripps Oceanography lab monitoring atmospheric CO2 named National Historic Chemical Landmark
The rate of growth in carbon dioxide concentrations in the atmosphere has accelerated since the beginnings of the Keeling Curve.
Breakthrough after field project collects richly detailed ice core records from Antarctica
Supports continued operation of the iconic measurement series