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Exposure to air pollution on city streets is enough to counter the beneficial health effects of exercise in older adults, according to new research.

Tropical Cyclone Ockhi is quickly weakening in the Arabian Sea and is expected to dissipate on Dec. 6 when it makes landfall in northwestern India. The Global Precipitation Measurement mission or GPM core satellite passed over Ockhi and looked at its rainfall as wind shear was affecting the storm.  

Queen’s University researchers are using magnetic fields to influence a specific type of bacteria to swim against strong currents, opening up the potential of using the microscopic organisms for drug delivery in environments with complex microflows – like the human bloodstream.

“MTB have tiny (nanoscopic) organelles called magnetosomes, which act like a compass needle that helps them navigate to nutrient-rich locations in aquatic environments – their natural habitats – by using the Earth’s magnetic field,” says Dr. Escobedo. “In nature, MTB play a key role in Earth’s cycles by influencing marine biogeochemistry via transporting minerals and organic matters as nutrients.”

A compound found in seaweed could protect human skin from the damaging impact of the sun without causing harm to marine ecosystems. 

Some avian influenza, or bird flu, viruses that are able to enter North America from other continents through migrating birds can be deadly to poultry and can infect waterfowl populations, according to a recently published U.S. Geological Survey study.