Nature

A waterfall in Hawaii sometimes flows up instead of flowing down

A tree can filter up to 27 kg of pollutants in the air each year

The largest flower on Earth comes from a plant called Rafflesia arnoldii

Butterflies taste their food with their feet

Trees never die of old age

Trees are the oldest living organisms on Earth

The Great Barrier Reef is 2600 km (1615 miles)

Sharks have been on Earth for nearly 450 million years