The productivity of ecosystems and their capacity to support life depends on access to
reactive nitrogen (N). Over the past century, humans have more than doubled the global …

Growth in fundamental drivers—energy use, economic productivity and population—can
provide quantitative indications of the proposed boundary between the Holocene Epoch and …

A remarkable exploration of the science, history, and politics of the Anthropocene, one of the
most important scientific ideas of our time, from two world-renowned experts Meteorites …

Nitrogen (N) is used in many of life's fundamental biomolecules, and it is also a participant in
environmental redox chemistry. Biogeochemical processes control the amount and form of N …

BACKGROUND Humans are altering the planet, including long-term global geologic
processes, at an increasing rate. Any formal recognition of an Anthropocene epoch in the …

Time is divided by geologists according to marked shifts in Earth's state. Recent global
environmental changes suggest that Earth may have entered a new human-dominated …

We evaluate the boundary of the Anthropocene geological time interval as an epoch, since it
is useful to have a consistent temporal definition for this increasingly used unit, whether the …

Mountain lakes are often situated in protected natural areas, a feature that leads to their role
as sentinels of global environmental change. Despite variations in latitude, mountain lakes …

Event stratigraphy is used to help characterise the Anthropocene as a chronostratigraphic
concept, based on analogous deep-time events, for which we provide a novel …

Because the capability of terrestrial ecosystems to fix carbon is constrained by nutrient
availability, understanding how nutrients limit plant growth is a key contemporary question …