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BEIJING - Always forgetting things? A new Chinese study suggests you might need more outdoor activity and exposure to sunlight to improve your memory.

Automated subway trains will be used on the new airport line, said Yang Guangwu, chief engineer of the Beijing Major Projects Construction Headquarters Office. When put into operation in September along with the new airport, the trains will be capable of fully automated driverless operation and will be the fastest subway trains in China.

A?third of Prime members have joined in the past year, according to a survey by the CIRP research firm.

Australia's fossil fuel exports contribute 3.6 percent of global greenhouse gas emissions each year－with coal exports responsible for 2.9 percent in 2017－according to a report released in July by Climate Analytics, a think tank based in Berlin. Add that to the 1.4 percent of global emissions from the country's domestic use of fossil fuel and you have a country with a population of 25.5 million－less than Beijing's when migrants from other parts of China are included－that is responsible for about 5 percent of global emissions.

Authorities in Taiwan have lowered the death toll in a train derailment to 18.