Andrew goes to Thailand to show you how to make fire with bamboo friction.

Jungle (Sanskrit: जंगल) refers to the most dense, more or less impenetrable regions within a tropical rainforest with an abundance of animal and plant life. The word jungle originates from the Sanskrit word jangala (जंगल) which referred to uncultivated land.

About 6% of the Earth's land mass consists of the ecosystems that could qualify as jungle under the common usage of the word. 57% of all species live in jungle environments.In common usage, forests of northern Thailand or southern Guangdong in China would qualify, but scientifically, these are "monsoon forests" or "tropical deciduous forests" but not "rain forests".

As a forest biome, jungles are present in both equatorial and tropical climatic zones, and are associated with preclimax stages of the rainforest. In another technical context, jungle is distinguished from tropical rainforest in that the former is a profuse thicket of tropical shrubs, vines, and small trees growing in areas outside the light-blocking canopy of a tropical rainforest. Hence, jungles are often found at the edges of climax rain-forests, where human activity may increase sunlight penetration.

Bamboos are the fastest growing plants in the world. They are capable of growing up to 60 centimeters (24 in.) or more per day due to a unique rhizome-dependent system. However, this astounding growth rate is highly dependent on local soil and climatic conditions. Bamboos are of notable economic and cultural significance in East Asia and South East Asia where they are used extensively in everyday life as building materials, as a food source and as a highly versatile raw product.