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Articles on Precautionary principle

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A worker is seen cleaning surfaces inside a long-term care home. THE CANADIAN PRESS/Darryl Dyck

Omitting indoor air quality from COVID-19 guidance for shelters and long-term care homes is a grave mistake

Residents of group homes and long-term care are at high risk for COVID-19. But an important aspect has been left out of Public Health Ontario’s guidance for these facilities: indoor air quality.
Mosquito eggs float on the surface of a pond. The insecticide Bti is used to kill mosquito larvae, but it could also harm frogs. (Shutterstock)

Are mosquito-killing natural pesticides unintentionally harming frogs?

The insecticide Bti kills target organisms like mosquitoes and blackflies, but new research shows it may also have negative effects on non-target species like frogs.

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