Which country holds the Presidency of G7 in 2022?

Chinese scientists have built an “artificial moon” research facility, to simulate low-gravity environments using magnetism. The facility, which is to be officially launched this year, will use powerful magnetic fields inside a vacuum chamber to make gravity disappear. This effect is called ‘Diamagnetic levitation’.

China`s population shrank last year for the first time in more than six decades, official data showed on January 17, 2023, as the world`s most populous country faces a looming demographic crisis. The nation of 1.4 billion has seen birth rates plunge to record lows as its workforce ages, in a rapid decline that analysts warn could stymie economic growth and pile pressure on strained public coffers. The mainland Chinese population stood at around 1,411,750,000 at the end of 2022, the National Bureau of Statistics (NBS) reported, a decrease of 850,000 from the end of the previous year. The number of births was 9.56 million, the NBS said, while the number of deaths stood at 10.41m