High Asia

Himalayas

The world's roof. Where animals evolved to breathe air thinner than altitude sickness.

Species

25,000

Plant species

10,000

Endangered

18%

Pressure

Glaciers retreating ~15 m yearly

Surprise of the day

Bar-headed geese fly directly over Everest at 8,800 metres, breathing air with one-third the oxygen of sea level.

Who eats who

Apex predators on top. Energy flows down.

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