The volume of water in Utah's Great Salt Lake has declined by almost half since 1847. Human consumption is the main cause of the lake's desiccation, say researchers who predict that an additional 30 square miles of lake bed could be exposed within 30 to 50 years unless action is taken.
In Viru, Peru, glacial melt has helped to provide water to residents and allowed for the cultivation of crops such as blueberries and asparagus. But much of the glacier could be gone by the middle of the century, leaving an uncertain future for farmers as the water supply declines.
A river in the Himalayas that was thought to have run through one of the earliest known urban civilizations may have already disappeared by the time the Indus society settled there about 5,300 years ago, according to findings published in Nature Communications. Using satellite data and field work, researchers say the Sutlej River never swerved back after an ancient course change, actually saving the community from potential flooding.
Sea level rise due to climate change poses a threat to thousands of key archaeological sites, per a study published in PLOS ONE. The study looked at data about archaeological sites in nine southeastern states and found that a rise of about 1 meter, or about 3.3 feet, would result in the loss of more than 13,000 sites, while a rise of about 5 meters, or about 16.4 feet, would harm more than 32,000 sites in that region.
The technologies that have allowed so much of New Orleans to be built up in the 20th century have also created their own problems, largely due to subsidence that undermines structures built on land that needs to be drained. Now some are considering how a return to an older practice of living with water rather than trying to beat it back may be preferable.
Public health authorities at the Zanzibar Malaria Elimination Programme in Tanzania are working with scientists from Aberystwyth University in the UK to locate and map known malaria hot spots using drone technology. These malarial mosquito habitats are then treated with larvicides to decimate mosquito larva populations there.
In his address, "Climate, Capital, Conflict -- Geographies of Failure or Success in the 21st Century," AAG Past President Glen MacDonald will ask the question: Will people and planet succeed in meeting the challenges posed by the 21st century or will environmental and socioeconomic pressures, produce catastrophic failure? The address will explore the mounting and often geographically conflated stresses of accelerating climate change, increasing economic disparities and associated conflicts. Join us for the 2018 Past President's Address and Presidential Achievement Award Presentation on Thursday, April 12, 12:00-1:10 p.m. Learn more.
AAG Multimedia Resources for Geography Outreach and Engagement
The AAG is launching a new compendium of tools and materials for recruiting students, enhancing academic curricula, and raising geographic awareness among the public at large. It consists of videos, podcasts, syllabi, documents and websites, and is searchable by keywords, category, format and source to suit the user's needs. Promotional videos created by geography departments and academic centers to recruit students are a chief component of this new collection. Learn more.