Where Does The Okavango River Begin And End?
The Okavango River flows in southwest Africa.
What Are The Different Zones Of A Cave?
Caves have three different zones: entrance zone, twilight zone, and dark zone.
The Three Major Tundra Regions In The World
There are three types of tundra regions in the world.
Plants That Grow In The Sahara Desert
Although the Sahara is one of the driest landscapes in the world, some plants have managed to survive in its harsh environment.
Spiral Jetty, Utah - Unique Places Around The World
Spiral Jetty is an earthwork sculpture created by American sculptor Robert Smithson.
How Many Space Stations Are There In Space?
Space stations are necessary for the success of space missions.
Where Are The Poles Of Cold?
The Southern Hemisphere's Pole of Cold is located at Vostok Station, Antarctica.
What Is A Hydrothermal Vent?
Hydrothermal vents are volcanic fissures on the sea floor that release geothermally heated water.
What Is A Wetland?
A wetland is a type of ecosystem that is saturated with water.
How Cold Is The Exosphere?
The exosphere is the outermost layer of Earth's atmosphere.
Plants That Live in Caves
The amount of sunlight received determines the types of plants that can grow in each part of a cave.
Venus: Earth's Twin Sister
Venus is sometimes called Earth's twin sister.
Which Animals Are Naturally Blind?
Many cave-dwelling animals have evolved to be blind.
What Animals Live In Tibet?
Only specially adapted animals can survive in the harsh environment of the Tibetan Plateau.
Lagoa dos Patos: The Largest Lagoon In South America
Lagoa dos Patos is the largest lagoon in South America.
The 5 Most Remote National Parks In Canada
Remote location is the biggest deterrent to tourism in Canada's least visited national parks.
Animals That Live in the Deep Ocean
The deep sea teems with mysterious creatures which most of us will never see.
What is the Milky Way Galaxy Made Of?
Hydrogen is the most abundant element in our galaxy.
Why Is The Brazilian Tapir A Threatened Species?
The Brazilian tapir is poached for its meat and hide.