Sep 1, 2022
Thought Question: If you had the ability to live forever, what would be some of the benefits and drawbacks?
Old age. Disease. Accidents. Life is filled with danger, and we can only avoid it for so long. But what if we didn't need to deal with aging? What if we could simply go back to our younger selves? That's exactly what Turritopsis dohrnii, the “immortal jellyfish,” does.
Researchers in Spain have figured out how the jellyfish pulls off this trick. They compared its DNA to a similar species. The other jellyfish doesn't have the ability to live forever. So, the scientists figured out which genes make the "immortal jellyfish" different. When it senses threats, the immortal jellyfish reabsorbs its tentacles. It becomes a polyp. That's the name of a jellyfish early in its life. From there, the jellyfish can repeat its life cycle. The process can go on forever.
The National History Museum of London explained that the immortal jellyfish is like "a butterfly which, instead of dying, would be able to transform back into a caterpillar and then (grow) into an adult butterfly once again."
The news has excited scientists, even though we have a long way to go to apply the findings to humans. Still, one author of the study says, “From this … we hope to find better answers to the many diseases associated with aging.”
Photo by Dr. Karen J. Osborn courtesy of Wikimedia Commons.
Lake Ice-Out Lesson 3 - Ice-Out Day
This lesson explores what ice-out day is, how it has changed in Sebago Lake and across the country since 1905, and how changes in Sebago Lake are impacting the local ice fishing derby.
This Farming Method Grows Crops with Fish Poop
This video describes the use of fish waste to grow plants.
"Letanía"
This mural by artist Secreto Rebollo depicts the emotional and physical damage of overfishing using symbolism.