Worldwide exports of electricity-powered automobiles were worth a total US$11.5 billion in 2018. That dollar amount represents a tiny 1.5% of the overall $765.8 billion for all subcategories of exported cars, but a 37.7% increase in international sales of electric cars from 2017 to 2018.
Almost all commodity groups fell in August, with energy prices tumbling 6,1% and non-energy commodities declining 3,9%.
Advances in adapting the technology and better methods for predicting wind conditions have fanned significant growth of the use of wind turbines for electricity in the last 40 years. A new report takes stock of where the field is now and what lies ahead. Researchers surveyed the growth of wind technology as a source of renewable energy and assessed its viability for continuing to capture larger shares of the electricity market.
International sales of iron ore exported by country totaled US$92.6 billion in 2018, declining by -26.3% since 2014 when iron ore shipments were valued at $125.7 billion and shrinking by -0.9% from 2017 to 2018.
From a continental perspective, Oceania led by Australia sold the greatest amount of exported iron ore at 50.4% of the global total. In second place was Latin America (23.6%) excluding Mexico but including the Caribbean trailed by shippers in Europe (7.6%), Asia (7.4%), North America (5.5%) then Africa (5.4%).
After two months of sharp declines, energy prices rebounded 2,4% in July; they are currently up 3% for the year.
Future wireless data networks will have to reach higher transmission rates and shorter delays, while supplying an increasing number of end devices. Researchers have used ultra-rapid electro-optical modulators to convert terahertz data signals into optical signals.
Global sales from cotton exports by country in 2018 totaled US$59.2 billion. Overall, the value of cotton exports decreased by an average -7.8% for all exporting countries since 2014 when cotton shipments were valued at $64.2 billion. Year over year, cotton shipments appreciated by 4.3% from 2017 to 2018.