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A University of Wyoming researcher contributed to a paper that demonstrated, for the first time, direct observation of cloud seeding -- from the growth of the ice crystals through the processes that occur in the clouds to the eventual fallout of the ice crystals that become snow -- and how the impacts could be quantified.

Eastern cougars once roamed every U.S. state east of the Mississippi, but it has been eight decades since the last confirmed sighting of the animal. Now, the U.S. Fish and Wildlife Service has officially declared the subspecies extinct and removed it from the U.S. endangered species list.

A type of battery first invented nearly five decades ago could catapult to the forefront of energy storage technologies, thanks to a new finding by researchers at MIT. The battery, based on electrodes made of sodium and nickel chloride and using a new type of metal mesh membrane, could be used for grid-scale installations to make intermittent power sources such as wind and solar capable of delivering reliable baseload electricity.

By studying wild rice in lakes and streams, a team of researchers led by the University of Minnesota has discovered that sulfate in waterways is converted into toxic levels of sulfide and increases other harmful elements. This includes methylmercury, the only form of mercury that contaminates fish.

The vaccines used by commercial fish farmers are not protecting fish from disease, according to a new study.

The study was compiled by researchers at the University of Waterloo, the Pontifical Catholic University of Valparaiso and Chile’s University of Valparaiso. It showed vaccinated fish tend to show more symptoms when contracting diseases, with the health impacts and ultimately deaths occurring as if they’d never received a vaccine.