Humans value natural systems in many ways. Should all of these values be expressed in economic terms? Or, do ecosystems have value independent of humans? Aa Aa Aa What is the value of an intact, ...

Eutrophication is a leading cause of impairment of many freshwater and coastal marine ecosystems in the world. Why should we worry about eutrophication and how is this problem managed? Eutrophication ...

For millions of years, large herbivores like mastodons and giant deer shaped the Earth's ecosystems, which astonishingly stayed stable despite extinctions and upheavals. A new study reveals that only ...

About 250 million years ago, the Permian-Triassic mass extinction killed over 80 per cent of the planet's species. In the aftermath, scientists believe that life on earth was dominated by simple ...

A whitish layer striating the Arctic cliffs of Spitsbergen provides exceptional testimony to the regenerative capacity of the ...

Biological communities are rarely stable. Their composition is constantly changing, depending on the environmental conditions ...

ARLINGTON, Va.--(BUSINESS WIRE)--The National Science Teaching Association (NSTA) and the eco-documentary KISS THE GROUND have collaborated to bring new, science-based lesson plans and resources to ...