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Simon Fraser University researchers are developing a tiny power source that activates with only a few drops of water and can provide instant power up to 100 minutes before being tossed away.

The patent-pending biodegradable PowerPAD (Power: Portable And Disposable) is a single-use disposable battery—a mere inch in diameter—in which water stimulates a chemical reaction that changes the oxidization of its atoms.

The long range of airborne drones helps them perform critical tasks in the skies. Now MIT spinout Open Water Power (OWP) aims to greatly improve the range of unpiloted underwater vehicles (UUVs), helping them better perform in a range of applications under the sea.

Recently acquired by major tech firm L3 Technologies, OWP has developed a novel aluminum-water power system that’s safer and more durable, and that gives UUVs a tenfold increase in range over traditional lithium-ion batteries used for the same applications.

After much of Cape Breton’s oyster sector closed in 2002, Dr. Sarah Stewart-Clark, an assistant professor in the Department of Animal Science and Aquaculture in Dal’s Faculty of Agriculture, was determined to find a way to rebuild this 100-year-old economic and cultural activity.

The sector’s closure was the result of a pathogen found in oysters located in the Bras D’Ors Lakes. Known as the Haplosporidium nelsonii parasite (MSX), the disease causes high mortality in oyster populations but has no impact on humans.

Find related stories on NSF's geosciences risk and resilience interest area.

Understanding "slow-slip" earthquakes on the seafloor -- seismic events that occur over a period of days or weeks -- is giving researchers new insights into undersea earthquakes and the subsequent creation of tsunamis. Through an ocean discovery program supported by the National Science Foundation (NSF), scientists are studying the seafloor off the coast of Japan. The region could provide vital clues.

Two tectonic plates, the Pacific Plate and the Eurasian Plate, meet there. In this ocean trench zone, the Pacific plate slides beneath the Eurasian plate. Such subduction zones are often associated with large earthquakes.

Large-scale interventions to water resources, such as irrigation, dams and reservoirs, and water withdrawals, have been essential to human development. But interventions tend to solve water scarcity problems at a local level, while aggravating water scarcity downstream.  In a new study published in the journal Nature Communications, researchers have now assessed the impacts of human interventions on water scarcity at a global scale.