The savanna - one of the most dynamic habitats on the planet.
Savannas, or tropical grasslands, are located north and south of the equator, stretching across South America, Central Africa, and Northern Australia, covering 20% of the Earth's land.
There are two distinct seasons in the savanna.
Lasting around eight months, the winter is a period of extreme drought when only around 10 centimeters of rain falls.
The summer is extremely wet, with 40 to 60 centimeters of rain falling in only four months.
Constant high temperatures and irregular precipitation prevent the spread of trees and shrubs, whilst maintaining the savanna's characteristic grasses.
Every winter, wildfires spread across the savanna. Despite their destructive power, this is a vital process for regulating the growth of grasses and adding nutrients to the soil.
Tropical grassland habitat:
Two distinct seasons
Winter drought and wildfires
Heavy summer rains
Stable annual temperatures
Savanna plants have developed specific adaptations to survive.
They have long taproots that can reach the deep water table during the winter drought, thick bark that resist the annual wildfires, and thorns to discourage grazers.
The savanna is home to the greatest herds on Earth. Serengeti wildebeest need grass all year round, and in the dry winter months they travel 1500 kilometers in search of rain.
The savanna is a land of boom and bust.
The constant swing between the destructive and creative forces of the weather make it one of the most fascinating habitats on the planet.