/oss/taxonomy/term/550/all en /oss/article/did-you-know/snails-spiders-and-octupi-all-have-blue-blood <p>Snails, spiders and octopi have something in common- they all have blue blood! We're not talking in the sense of royalty, these creatures literally have blue blood. So why is their blood blue and ours red?</p> <p>One of the purposes of blood is to carry oxygen around the body. That transport system is actually quite complex, not just a matter of oxygen dissolving in liquid blood.  </p> Mon, 12 Feb 2018 17:01:24 +0000 Joe Schwarcz PhD 6920 at /oss /oss/article/cosmetics-health-history-quirky-science-toxicity-you-asked/cave-paintings-mms <p>Studies have shown that red is the colour that attracts attention. Its uses are timeless and endless. Since ancient times, the colour red has been involved in fashion, art, food and cosmetics. But how was the colour red extracted or manufactured? Interestingly, throughout the ages, humans have resorted to different minerals and chemicals to successfully produce various shades of red.</p> Fri, 22 Nov 2013 00:21:45 +0000 Alexandra Pires-Ménard, OSS Intern 2035 at /oss