KNYSNA: In South Africa’s most visited and affluent province, Western Cape, one of the worst droughts in living memory is drying up dams, scorching grass and killing livestock, prompting the government to declare a national emergency this month. Scientists say climate change is causing worsening droughts in the province, which draws tourists to its vineyards, beaches and the lush slopes of Table Mountain above Cape Town, but lies on the edge of the advancing semi-desert Karoo.