Followup on all the Covid-19 patients admitted to one Sydney hospital in March found that most of them still have symptoms.

Patients whose cases were not serious enough for hospitalization also still have symptoms.

Half the world's existing beaches are likely to be lost by 2100. If some positive feedbacks kick in, it could be more than half.

If sea level rise were to stop there, eventually new beaches would develop. But the ocean will keep rising for centuries.

It makes a difference, practically at least, whether people in group G tend to suffer a certain kind of harm as a direct result of prejudice, or because they tend to be poor — even if their poverty is itself a result of prejudice.

Even though in both scenarios cases prejudice is an underlying cause, the mechanism of the problem makes a difference to what we should do about it. If all poor people are being harmed, let's help all of them.

Carole Cadwalladr: the corrupter is again trying to use Facebook to manipulate American voters with lies and conspiracy theories. Since it worked in 2016, we can't be confident it won't work.

Other brutal governments also use Facebook to manipulate the public.

A UN monitor in Colombia was apparently murdered to silence him about something he had seen.