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42Evolution

Q&A

Are plants warm-blooded?

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Rafflesia arnoldii. It's common name is the 'corpse flower', so-called because it gives off a repugnant smell akin to that of a rotting corpse - which attracts the carrion flies that pollinate it(Image: Wikimedia Commons)

Do plants need sunlight?

Neil Armstrong, first man on the moon, works on the Apollo 11 Lunar Module, after a safe landing in the ‘Sea of Tranquility’. This is the only photograph taken of him on the moon’s surface (Image: NASA)

How did our stable body temperatures evolve?

Our warm bodies come at such a huge metabolic cost that experts cannot agree on why this ability has evolved at all. How do we and other animals come to stay warm, whilst keeping our cool?

The swordfish (Xiphias gladius) is a migratory predator. From their spawning grounds in the Sargasso Sea, these deep water hunters range throughout the world’s temperate and tropical oceans. We most often see them on the menu; Atlantic stocks have declined massively due to overfishing (Image: Wikimedia Commons)

Heated eyes give swordfish deep-sea ‘night vision’

Some 300m below the ocean surface it is always twilight, and cold…  The water is barely above zero.  Fast-moving squid…

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