...Secondly, how and why is someone making predictions 30 years from now? The world might have ended by then. On what data is someone making such a prediction?...
Such long-term forecasts have no value, since it is very difficult to imagine what the world will look like in 30 years. And such forecasts are made for the sole purpose of attracting a lot of attention to themselves, since it is impossible to verify the correctness of the forecast.