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42Evolution

Near Horizons

How did our stable body temperatures evolve?

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)

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)

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A feral male Indian elephant (Elephas maximus) known as Raja, caught here by wildlife photographer and author Steve Bloom. Steve observed this animal regularly swimming off the coast; Andaman islands, India. Male elephants are typically solitary; the herd is comprised of females and youngsters (Image: Steve Bloom, 2006)

Elephants’ aquatic ancestors; just below the surface

Pausing on the bank, the lead female gathers her herd, ensuring that she is followed before she plunges in.  The…

University researchers conduct an autopsy on two stranded Gray's beaked whales (Mesplodon grayi) at Port Waikato, New Zealand. Exposure to underwater sonar seems to trigger a change in their normal diving behaviour, perhaps causing these animals to surface too quickly and putting them at risk of decompression sickness (Image: Wikimedia Commons)

Coming up for air

Within a few hours of the naval sonar drill, reports arrived of stranded beaked whales appearing over many kilometres along…

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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