Sunday Morning Links

This and that for your Sunday reading.

- Ed Yong sets out the three simple rules of COVID-19 at this stage - with the spread of variants among unvaccinated people threatening to undo the success achieved so far in limiting the risk to vaccinated populations. James Tapper and Robin McKie report on the WHO's warnings that a failure to ensure vaccines are available globally is allowing the Delta variant to gain the upper hand. And Robert Hart discusses the vulnerability of children to the Delta variant - even as that risk seems to have been largely ignored in a rush to slash public health protections.

- William Lindsley et al. find that masks and HEPA air cleaners - both individually or particularly in combination - are highly effective in reducing the transmission of COVID-19. And Sarah Addleman et al. confirm (PDF) that  it's essential to limit the spread of airborne particles.

- Angela Dewan discusses how the climate crisis is frying the northern hemisphere. And Robinson Meyer highlights how the U.S.' infrastructure isn't yet built - and indeed isn't being planned - to deal with the extreme weather resulting from a climate breakdown, while CBC News reports on the similar reality in Alberta.

- Sarah Kaplan reports on the direct human toll of extreme heat in the U.S.' Pacific Northwest. And John Vaillant writes that nowhere is safe from similar effects of climate change.

- Finally, Henry Giroux writes about how the sanitization of history reproduces longstanding inequalities. And Duncan Cameron argues that Canada can't allow a whitewashed national identity to prevent us from recognizing and acting to remedy historical violence and genocide against Indigenous peoples.