Happy Sunday! The top five stories on our website this week are displayed below.

This week our readers liked articles on how at-home COVID-19 tests work, 7 data charts examining the first 18 months of the pandemic, new research linking greenhouse gas emissions to food production, the lingering health effects in 9/11 first responders and an explainer on what happens when your foot falls asleep.

Another good find: Last week the Met gala returned to NYC. Rap singer Nicki Minaj missed the red carpet because she was unvaccinated, a fact she later explained by tweeting her 23 million followers a COVID-19 myth – that a male friend had become impotent after being vaccinated. These shots don’t cause male infertility or erectile dysfunction. Just ask Ranjith Ramasamy, an associate professor of urology at the University of Miami. He reviewed the research and reported back in July that that’s not a thing.

Emily Costello

Managing Editor

Rapid antigen COVID-19 tests, designed for use at home, can show results in 15 minutes. Ellen Moran via Getty Images

Over-the-counter rapid antigen tests can help slow the spread of COVID-19 – here’s how to use them effectively

Zoë McLaren, University of Maryland, Baltimore County

Making rapid antigen tests for COVID-19 cheaper and more accessible can catch the infectious cases before they spread and help everyone resume normal activities safely.

September 11, 2021 marks the 18 month anniversary of the WHO declaring the COVID-19 outbreak a pandemic. summerphotos/Stock via Getty Images Plus

18 months of the COVID-19 pandemic – a retrospective in 7 charts

Katelyn Jetelina, University of Texas Health Science Center at Houston

A lot has happened since the WHO declared the coronavirus outbreak a pandemic. A portrait in data highlights trends in everything from case counts, to research publications, to variant spread.