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Nature & Wildlife
Evolution is a tinkerer, not an engineer. These lessons cover the adaptations, ecosystems and strange arrangements that result.
2 lessons · 1 quiz
Lessons
Nature & Wildlife/intermediate
The Whale Fall: A Dead Whale Feeds a City
When a large whale dies and sinks, its body supports a succession of deep-sea communities for decades — including organisms that live on chemicals rather than sunlight.
6 min read
Nature & Wildlife/beginner
Why Leaves Change Colour
Autumn colour is not leaves turning. It is leaves being revealed, as green chlorophyll breaks down and the pigments underneath become visible.
4 min read
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