Sophia was built by Hong Kong-based Hanson Robotics.
Food lovers are guided to explore little-known ethnic restaurants.
Swiss flushes gold and silver into sewer.
More than 20 million people live in the capital and surrounding area.
The expansion to 280-character tweets will be extended to all Twitter users except those tweeting in Chinese, Japanese and Korean.
Endurance events have captured the imagination of athletes.
They may be stuck because temperatures are starting to fall.
US Stands Alone on Paris Agreement
Scientists call these radio waves Very Low Frequency, of VLF.
Developing countries can work to close the pain gap.