Elements 113, 115, 117 and 118 have formally been recognised, and are temporarily know as Ununtrium (Uut), Ununpentium (Uup), Ununseptium (Uus) and Ununoctium (Uuo). The seven row of the periodic table is finally complete. All four elements are not found in nature but can be synthetically created in laboratories.
After Pluto was kicked out in 2006, scientists have now discouvered a new planet in our solar system, know as "Planet Nine". It has neven been seen, but its existence can be inferred by its gravitational effects.
Stupid question: Can an air-conditioner be turned into a heater if the temperature is set to 20+ degree when the weather is so cold? I finally tested it and the result is positive.
# posted by Birdie @ 7:05 PM
