US air pollution rules could be hugely insufficient in preventing deaths, experts are concluding from a new study of the likely causes of death of 4.5 million veterans.

Published in the peer-reviewed journal Jama, the research finds that 99% of deaths from illnesses linked to a certain type of air pollution occur in people who are exposed to lower levels than the Environmental Protection Agency (EPA) currently deems acceptable.

But Donald Trump’s EPA could be set to maintain the current standard – thus leading to continued air pollution-associated deaths. The agency is also reconsidering the established science linking particle pollution from fossil fuels and other sources with a host of illnesses.

About 200,000 Americans are thought to die from air pollution each year, but scientists previously couldn’t pinpoint the specific causes of death for almost half of those people.

Read more at The Guardian