The Limpopo River's suddenly turning a bright green in mid-July sparked fears that the cause might have been a major pollution spill further upstream from a mine on the Zimbabwean side. Residents were, however, elated to hear that the sudden change of colour was nothing more than a naturally occurring algae bloom. This followed after the Vhembe District Municipality (VDM) conducted water-sample tests and later announced that the test had come back "negative".
"That is not a normal alga...