Editor's note

Canadian singer Justin Bieber is in the news again, but not for what you might expect. The singer announced this week that he was recently diagnosed with Lyme disease – a disease spread by ticks. Not only is it the most common tick-borne disease in the west – with an estimated 300,000 people being diagnosed with it every year in the US – instances of the disease are also on the rise in the UK. It can cause a range of symptoms, from chronic pain, fatigue, “brain fog”, and arthritis, to mental health problems. Even with treatment, symptoms of Lyme disease might persist for months or even years. So if you plan on spending time in the woods this summer, perhaps consider covering up.

A new study by researchers at Staffordshire University also found that your social class, ethnicity and gender might all impact how you, and your health, are affected by air pollution. Researchers found that those living in lower-income areas were more likely to experience poorer air quality, which had greater consequences for their health.

Elsewhere on The Conversation, we’re pondering whether aliens might already be living among us – what if we just can’t see them? Following British astronaut Helen Sharman’s comments that aliens might not be detectable to human eyes, one researcher ponders this possibility, suggesting aliens might actually be silicon-based lifeforms, not the carbon-based lifeforms we are.

Heather Kroeker

Assistant Section Editor

Top stories

The singer announced he’s been battling the disease for a couple of years now. Tinseltown/ Shutterstock

Lyme disease: Justin Bieber’s tick-bite illness can cause joint pain, heart problems, and depression

Hany Elsheikha, University of Nottingham

Lyme disease is the most common tick-borne disease in the West.

Smoke covers a street market in Palermo, Italy. October 8 2019. Radiokafka/Shutterstock

Air pollution: your exposure and health risk could depend on your class, ethnicity or gender

Jon Fairburn, Staffordshire University

Pollutants like nitrogen dioxide are a silent killer, but everyone isn't equally at risk.

They probably won’t look anything like this. Martina Badini/Shutterstock

Could invisible aliens really exist among us? An astrobiologist explains

Samantha Rolfe, University of Hertfordshire

The Earth may be crawling with undiscovered creatures with a different biochemistry to life as we know it.

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