WHO says air pollution kills 7 mn a year, toughens guidelines

The World Health Organization strengthened its air quality guidelines on Wednesday, saying air pollution was now one of the biggest environmental threats to human health, causing seven million premature deaths a year.

A better way to screen cats for heart disease

Cats are very good at hiding their health problems, a survival instinct from their wild ancestors, when showing weakness made them easier prey. One health problem they hide is heart disease, meaning it can progress to become ...

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