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| Jellyfish create a 'virtual wall' to enhance performance Posted: 08 Jan 2021 09:34 AM PST A new discovery finds that jellyfish create a 'ground effect,' similar to how air squeezes between an airplane and ground during take-off, which builds pressure and a force that boosts performance. Never before has it been proven that an animal can create this phenomenon away from a solid boundary, let alone the open ocean. |
| Which came first, sleep or the brain? Posted: 08 Jan 2021 08:10 AM PST In work that could help unravel the origin of sleep, an international team of researchers has shown that tiny, water-dwelling hydras not only show signs of a sleep-like state despite lacking central nervous systems but also respond to molecules associated with sleep in more evolved animals. The new results suggest that many sleep-related mechanisms developed before the brain and may have been conserved during the evolution of central nervous systems. |
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