The thinking behind the move was widely accepted at the time, and 'has only been proved wrong in hindsight' - researchers
Political systems and profit motives make the world go round, but alternative thinking could turn the earth on its axis.
“This is the moment where African countries have to take control of their oceans, for the benefit of their own people.”
Faster than a speeding tsessebe, South Africa's high-speed computer processors are far from a flop.
Study with gaming app shows that older people are less attracted by big rewards, and will take less risks to get them.
About 60 000 die globally from lung disease; one vessel emits as much as 50-million cars. Steps to stop pollution in SA ports have not been enacted.
But this does not include nuclear material left over from mining aborted about 40 years ago.
Smart cities are harnessing the best of humanity, creating sustainable places for people to work.
The seven economies will stop propping up coal, gas and oil by 2025. But giant greenhouse gas emitters China and India haven’t made the pledge.
Objections to energy from wind and sun are largely because projects are eyesores to those whose views are marred, but even they have a price.