Observed trends in Earth System behavior

Soil organic carbon pools in the northern circumpolar permafrost region

(2009) C. Tarnocai et al.   GLOBAL BIOGEOCHEMICAL CYCLES

A safe operating space for humanity

(2009) Johan Rockström et al.   NATURE

Obliquity-paced Pliocene West Antarctic ice sheet oscillations

(2009) T. Naish et al.   NATURE

Modelling West Antarctic ice sheet growth and collapse through the past five million years

(2009) David Pollard et al.   NATURE

Ocean Acidification and Its Potential Effects on Marine Ecosystems

(2008) John M. Guinotte et al.   Annals of the New York Academy of Sciences

Vulnerability of Permafrost Carbon to Climate Change: Implications for the Global Carbon Cycle

(2008) Edward A. G. Schuur et al.   BIOSCIENCE

Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000

(2008) Navin Ramankutty et al.   GLOBAL BIOGEOCHEMICAL CYCLES

Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records

(2008) Mike Walker et al.   JOURNAL OF QUATERNARY SCIENCE

An Earth-system perspective of the global nitrogen cycle

(2008) Nicolas Gruber et al.   NATURE

High-resolution carbon dioxide concentration record 650,000–800,000 years before present

(2008) Dieter Lüthi et al.   NATURE

Tipping elements in the Earth's climate system

(2008) T. M. Lenton et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA