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

Sub-Saharan Africa has one of the least developed policy environments to support energy access, says a new World Bank report released on Wednesday.

Seasonally dry tropical forests (SDTF) are located in regions with alternating wet and dry seasons, with dry seasons that last several months or more. By the end of the 21st century, climate models predict substantial changes in rainfall regimes across these regions, but little is known about how individuals, species, and communities in SDTF will cope with the hotter, drier conditions predicted by climate models.

Revenues derived from carbon have been seen as an important tool for supporting forest conservation over the past decade. At the same time, there is high uncertainty about how much revenue can reasonably be expected from land use emissions reductions initiatives. Despite this uncertainty, REDDþ projects and conservation initiatives that aim to take advantage of available or, more commonly, future funding from carbon markets have proliferated.

A new report by the UN’s International Fund for Agricultural Development (IFAD) confirms the important role that the world’s biodiversity plays in ensuring the future of sustainable agricultural development.

Plans for independent checks of how much pollution new cars emit are being killed off by EU member states, according to leaked documents seen by the Guardian.

The Popocatépetl volcano in Mexico has been under observation since it violently spewed ash vertically into the air, startling locals.

Increasing levels of carbon dioxide in the atmosphere put shallow, warm-water coral reef ecosystems, and the people who depend upon them at risk from two key global environmental stresses: 1) elevated sea surface temperature (that can cause coral bleaching and related mortality), and 2) ocean acidification. These global stressors: cannot be avoided by local management, compound local stressors, and hasten the loss of ecosystem services.

Many countries have turned to fossil fuel subsidies at some point or another to reduce energy costs in order to cut transportation bills, prop up industries, or finance household electrification, particularly for the poorest families.

Improving survival and extending the longevity of life for all populations requires timely, robust evidence on local mortality levels and trends. The Global Burden of Disease 2015 Study (GBD 2015) provides a comprehensive assessment of all-cause and cause-specifi c mortality for 249 causes in 195 countries and territories from 1980 to 2015. These results informed an in-depth investigation of observed and expected mortality patterns based on sociodemographic measures.

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