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Jellyfish. | Helena Parra, Pompeu Fabra University, Spain Despite being primitive, jellyfish have a nervous system (stained green here) and muscles (red).
✯ Nerve cells and glial cells, coloured scanning electron micrograph (SEM). The nerve cells have small cell bodies (pink) and fine extensions called axons and dendrites (mauve). The glial cells have large cell bodies (brown) with thicker extensions (mauve). Neurons are responsible for passing information around the central nervous system (CNS) and from the CNS to the rest of the body. Glial cells are nervous system cells that provide the neurons with structural support and protection.✯
Is global warming causing brain-eating parasites to flourish? A deadly amoeba that thrives in warm waters has begun popping up in unexpected places - and here come the zombies, j/k.
The Voyager Golden Record was compiled by two people in love: the astronomer Carl Sagan, and Ann Druyan, the creative director of the project, who he would later marry. Druyan... recorded the electrical impulses of her brain and nervous system, her heartbeats... which were the sounds of a woman swept away: by a man, by ideas, by the power of sending their love out into eternity... Love, golden, close to eternal, flying at impossible speeds through the heavens.
Single-cell Fresh Water Algae (Desmids) - Magnified 400X
"Tardigrades are microscopic animals that live in moss and the muddy sand on beaches. They can survive high temperatures, freezing, and crushing pressures by drying themselves up into a little hard ball, called a tun. Stick a tun in water and [...] it will rehydrate and regenerate back into a tardigrade. [...] It may well be the most adorable genome on Earth."