I don’t mean to alarm you, but you’re surrounded right now – by millions of tiny, microscopic microbes. Whether you’re reading this in the office, sitting on the train or at home in your pyjamas, there are thousands upon thousands of fungi, viruses and bacteria thriving in the spaces around you. This intricate ecosystem of microorganisms is known as the “indoor microbiome”. And research is increasingly showing that just like your gut microbiome, it has a significant impact on your health — linked to everything from respiratory health and immune function to mental wellbeing.

More than four decades ago, the UK government banned the use of the toxic synthetic chemicals “polychlorinated biphenyls” (PCBs). Yet despite bans, the legacy of these toxic chemicals means human and environmental health is still being threatened today.

In a notable move, the UK has decided to suspend 30 arms export licenses from Israel. But, as we hear from a Middle East expert, this policy shift is unlikely to change much in Gaza.

Heather Kroeker

Commissioning Editor, Health

Our everyday activities have a significant influence on this indoor microbiome. VectorMine/ Shutterstock

The indoor microbiome: mounting research is revealing how the microbes in your home can influence your health

Samuel J. White, York St John University; Philippe B. Wilson, York St John University

The ‘indoor microbiome’ is linked to respiratory health, immune function and possibly even mental wellbeing.

Historic landfills contain high levels of toxic synthetic chemicals known as PCBs which continue to pollute the environment and pose a health hazard. Jenya Smyk/Shutterstock

PCBs: these toxic pollutants were banned decades ago but still pose a huge threat

Andrew Sweetman, Lancaster University

Due to their persistence and toxicity, strict regulation of PCBs should continue to be a top priority.

Anas-Mohammed / Shutterstock

UK suspends 30 arms export licences to Israel – but it won’t change much in the war in Gaza

Julie M. Norman, UCL

However, signals do matter, especially when seen as part of a broader international shift.

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