In his popular 2008 book Climate Wars, the US journalist and military historian Gwynne Dyer laid out a daunting scenario. Climate change would put growing pressure on fresh water and food over the coming century, he wrote, triggering social disorder, mass migration and violent conflict.

We estimate the potential reductions in methane and carbon dioxide emissions from several livestock and pasture management options in the mixed and rangeland-based production systems in the tropics.

Vocal actors within policy and practice contend that environmental variability and shocks, such as drought and prolonged heat waves, drive civil wars in Africa. Recently, a widely publicized scientific article appears to substantiate this claim. This paper investigates the empirical foundation for the claimed relationship in detail.

Ranchi, Sept. 5: Former ambassador H.H.S.

KOLKATA: Within a year of launch of the

Ecological gradients have long been recognized as important regions for diversification and speciation. However, little attention has been paid to the evolutionary consequences or conservation implications of human activities that fundamentally change the environmental features of such gradients.

After months of speculation, Brazil and India have launched a WTO dispute against the EU and the Netherlands over the seizure of generic drugs in transit.

What is a counterfeit medicine? The answer depends on who responds. To an English-speaking lay-person, it generally means

In its latest report on food insecurity, the FAO asserted that 915 million people were undernourished in 2008, and the figure is estimated to rise to 1.02 billion in 2009. The alarming numbers raise the twin questions of how the estimates are derived and how reliable they are.

Species distribution models (SDMs) are increasingly used for extrapolation, or predicting suitable regions for species under new geographic or temporal scenarios. However, SDM predictions may be prone to errors if species are not at equilibrium with climatic conditions in the current range and if training samples are not representative.