Nature
News: Greenhouse-gas concentrations are higher today than
they have been at any point in hundreds of millennia, according
to researchers who have analysed tiny air bubbles trapped in
Antarctic ice that dates back 800,000 years.
Atmospheric levels of carbon dioxide are now more than 28% higher than at any other point in the time period covered by the samples, according to Thomas Stocker, one of the authors of two studies in this week's Nature. Related articles Orbital and millennial-scale features of atmospheric CH4 over the past 800,000 years High-resolution carbon dioxide concentration record 650,000â800,000 years before present
Atmospheric levels of carbon dioxide are now more than 28% higher than at any other point in the time period covered by the samples, according to Thomas Stocker, one of the authors of two studies in this week's Nature. Related articles Orbital and millennial-scale features of atmospheric CH4 over the past 800,000 years High-resolution carbon dioxide concentration record 650,000â800,000 years before present
