Oolong tea, made from more mature leaves, usually have less caffeine than green tea. On the flip side, mature leaves contain less theanine, a sweet, natural relaxant that makes a tea much less caffeinated than it actually is. That is the theory, anyway.
The highest point in Asia is Mt. Everest which is 8,850 meters above sea level. And Asia's lowest point is the Dead Sea which is 400 meters below sea level.
Central Asia spans the area between the Caspian Sea and China. It includes five countries, all former Soviet republics. The largest and most northerly is Kazakhstan. To its south lies Uzbekistan in the west and Kyrgyzstan in the east, and to their south, Turkmenistan and Tajikistan, respectively. The topography of this landlocked region ranges from vast plains to high, rugged mountains, which influences its weather patterns.