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Hydrologists Find Mississippi River’s Buffering System for Nitrates is Overwhelmed

By Guest PostJune 9, 2014Environmentancient magnetic field, carbon fiber thailand, cfrp reinforced polymer, climate plan, crystalline filaments, dead zone, f1 cars, fiber reinforced plastics, formula 1 cars, fraction, geology, green america, gulf of mexico, john podesta, lars ellenrieder, mechanism, mississippi river, sam komplex, usgs, zellfluessigkeit

AUSTIN, Texas — A new method of measuring the interaction of surface water and groundwater along the length of the Mississippi River network adds fresh evidence that the network’s natural ability to chemically filter out nitrates is being overwhelmed.

The research by hydrogeologists at The University of Texas at Austin, which appears in the May 11 edition of the journal Nature Geoscience, shows for the first time that virtually every drop of water coursing through 311,000 miles (500,000 kilometers) of waterways in the Mississippi River network goes through a natural filtering process as it flows to the Gulf of Mexico. (more…)

Stemming the tide of invasive species

By Guest PostMarch 7, 2014Environmentaquatic damage, asia, bigheaded carp, black, carp, caspian sea regions, chanhassen, dna tracking, eastern eurasia, environmental scientists, genetic markers, invasive species, invasive water weeds, judas carp, justine koch, keller lake, maisrc, michael mccartney, midwestern rivers, minnesota legislature, mississippi river, mollusk researcher, peter sorensen, raymond newman, reid swanson, riley lake, sea lamprey, tide, united states, zebra mussels

As a roomful of environmental scientists discussed the 100-pound “bigheaded” carp from Asia invading upper Midwestern rivers, Peter Sorensen thought about the common carp.

A century earlier, that fish had also been introduced and become invasive, causing major aquatic damage that persists to this day. (more…)

Can We Turn Unwanted Carbon Dioxide Into Electricity?

By Guest PostDecember 30, 2013EnvironmentCO2, coal fired, concentric rings, electric power generation, fluids, generate electricity, geologic settings, geoscientist, geothermal power plant, horizontal wells, hotspots, jeffrey bielicki, jimmy randolph, Large Hadron Collider, martin saar, mingjie chen, mississippi river, multiple fluids, ohio state university, power plants, renewable energy, shannon gilley, subsurface, Technology, tom buscheck, turbine, underground, united states, university of minnesota, unwanted carbon dioxide, yue hao, yunwei sun

New power plant design to expand use of geothermal energy in the U.S.

Video: Gilley, S., and Bielicki, J (2013). “Geothermal Energy: Enhancing Our Future.” Online video. www.energypathways.org and YouTube. YouTube , 1 Dec. 2013. Web. (more…)

Navigate America’s Major Rivers Without Getting Wet

By Guest PostJuly 23, 2013Environmentamerica, downstream, higher elevations, major rivers, mississippi river, navigate, new orleans, online map service, streamer, streamflow gaging station, streams, surface waters, U.S. Geological Survey, united states, upstream, web connection

Have you ever dropped a stick into a river and wondered where it might go if it floated all the way downstream? Now you can trace its journey using Streamer – a new on-line service from the National Atlas of the United States^®.

Streamer is an online map service that lets anyone trace downstream along America’s major rivers and streams simply by picking a point on a stream. Streamer will map the route the stream follows. (more…)

Microbes in the Mississippi

By Guest PostAugust 5, 2012Environment, Sciencebacteria, bank, barcoded, christopher staley, dna analysis, e coli, fecal indicator bacterium, genetic information, human population, la crescent, lake, lake itasca, m3p, m3p students, mercury, michael sadowsky, microbe, microbial life, microorganisms, minnesota, Mississippi, mississippi river, river, st croix, trevor gould, twin cities, university of minnesota, zumbro

Professor and students study how microbial life changes along the river

The mercury is pushing 100, but professor Michael Sadowsky and two assistants leave the indoor coolness for the bank of the Mississippi River as it flows by the University of Minnesota Twin Cities campus.

The three men send a bucket splashing into the current and haul back a water sample. That doesn’t affect the river much, but information locked away in bacteria from the sample may tell them a great deal about how the river’s microbial communities change along its course through Minnesota and how human activity affects them. (more…)

Revealing China’s ancient past

By Guest PostJune 7, 20101 commentCulture, Scienceamerican association for the advancement of science, arts & sciences, China, environmental change, han dynasty, henan provincial institute of cultural relics and archa, mississippi river, mulberry leaves, pleistocene era, plow shares, rural life in china, sanyangzhuang, silk cultivation, silk road, society for american archeology, st. louis, t.r. kidder, washington university, western china, yellow river

An archeologist at Washington University in St. Louis is helping to reveal for the first time a snapshot of rural life in China during the Han Dynasty.

(more…)

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