The south-western United States is almost certain to experience a “megadrought” lasting decades if global warming continues unchecked, researchers have warned.

The trace element selenium is essential for human health and is required in a narrow dietary concentration range. Insufficient selenium intake has been estimated to affect up to 1 billion people worldwide. Dietary selenium availability is controlled by soil–plant interactions, but the mechanisms governing its broad-scale soil distributions are largely unknown. Using data-mining techniques, we modeled recent (1980–1999) distributions and identified climate–soil interactions as main controlling factors.

Onset of early summer has triggered early return of migratory birds from the region.

Ever wondered why you feel hotter than it really is outside?

This policy brief discusses climate impacts on the agricultural and tourism sectors in the Caribbean and the need for investment to build climate resilience. Climate impacts are already reversing economic growth, exacerbating poverty and undermining the future prosperity of Caribbean countries.

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