clockwise around the Black Sea
- Hydrogen (Wikipedia)
Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter. Under standard conditions, hydrogen is a gas of diatomic molecules with the formula H2, called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is colorless, odorless, non-toxic, and highly combustible. Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found as the gas H2 (dihydrogen) and in molecules, such as in water and organic compounds. The most common isotope of hydrogen, 1H, consists of one proton, one electron, and no neutrons.
- Moldova (Wikipedia)
Moldova (/mɒlˈdoʊvə/ mol-DOH-və, sometimes UK: /ˈmɒldəvə/ MOL-də-və; Romanian pronunciation: [molˈdova]), officially the Republic of Moldova (Romanian: Republica Moldova), is a landlocked country in Eastern Europe, on the northeastern corner of the Balkans. The country spans a total of 33,483 km2 (13,067 sq mi) and has a population of approximately 2.5 million as of January 2023. Moldova is bordered by Romania to the west and Ukraine to the north, east, and south. The unrecognised breakaway state of Transnistria lies across the Dniester river on the country’s eastern border with Ukraine. Moldova is a unitary parliamentary representative democratic republic with its capital in Chișinău, the country’s largest city and main cultural and commercial centre.
