Although the visual systems of animals living in the cold, dark water of the deep sea have been investigated for some time, little is known about vision in animals inhabiting polar oceans, where ...

‘Personally I found the diagrams on acid-base balance to be extremely enlightening and believe that these would have made my physiology studies far easier.’ Subscribe today to access over 6,000 ...

Almost exactly 500 years ago the Italian painter and inventor, Leonardo Da Vinci painted, what is said to be, one of the world’s truly great pieces of art - the Mona Lisa. Painted around 1502, it is ...

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