History was made early Tuesday when Solar Impulse 2 completed its historic round-the-world journey, becoming the first solar-powered airplane to circle the globe, with the aim to promote renewable energy. The selection of Abu Dhabi to be the launch-pad and the final leg of the epic odyssey wasn’t coincidental as the capital has been the centrestage of clean energy. …

  Catherine Putz SPECIAL TO EMIRATES BUSINESS Days after two suicide bombers killed more than 80 people amid a peaceful demonstration in Kabul, the country’s president said the Af-Pak relationship is Afghanistan’s biggest problem. In an interview with Pakistani media, President Ashraf Ghani agreed that terrorist groups, like the Taliban and al-Qaeda, are threats to the country but noted that …

Standard economic theory says that taxation reduces productivity. If you tax income, you reduce the incentive to work. If you tax capital gains, you reduce the incentive to invest, and so on. When you discourage useful economic activity, the economy becomes less efficient. But what if it were possible to impose taxes in a way that also increased productivity? That’s …