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42Evolution

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Are clouds alive?

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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…

Toxoplasma gondii is a microbial parasite often carried by cats, and passed on through contaminated water and faeces. It infects almost all warm blooded animals. In humans this microbe is usually kept in check by the gut microbial community, which out-compete it. However if the gut bacterial community is not functioning normally, toxoplasmolysis may result. In rats and mice, the pathogen can pass into the blood stream and migrate to the brain, where it induces behavioural changes. Infected mice no longer recognise cats (or their odour) as dangerous, which provokes them to put themselves at risk. When a cat eats an infected rat, this spreads the pathogen to a new host. (Image: Wikimedia Commons)

Gut feelings; are microbes in your intestines dictating your mood?

A cat hears a scuffling sound amongst the garbage.  She stands in shadow, all senses poised. A few moments pass;…

Sea Hare (Aplysia californica) (Image: Genny Anderson via Wikimedia Commons)

Can you starve at a banquet?

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