Why Should Saudi Arabia Diversify Its Economy? فاتح بلعيد, شيكوفيه فرهمند, ناتالي حلمي Climate change is a global issue. According to an IPCC special report (IPCC, Global warming of 1.5 °C. An IPCC special report on the impacts of global warming of 1.5 °C above pre-industrial levels and related global greenhouse gas emission… فاتح بلعيد شيكوفيه فرهمند ناتالي حلمي