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…
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?
Thomas Huxley was an English biologist who can truly be said to be one of the key intellectual figures of the nineteenth century. He acquired the nickname ‘Darwin’s Bulldog’ because of his vociferous defence of Charles Darwin’s theory of evolution by natural selection.
