New Scientist Podcasts
Weekly: Resurrecting frozen brains; giant asteroid heads to Earth; you really do have a ‘dessert stomach’
Feb 14, 2025
Researchers have successfully revived frozen mouse brains, opening doors to the future of cryonics and human preservation. A looming asteroid, 2024 YR4, poses a potential collision threat to Earth, prompting global monitoring efforts. Farmers are joining the fight against climate change by enhancing rock weathering techniques, while a delightful phenomenon known as 'dessert tummy' reveals how our brains make room for sweet treats, even after a hearty meal. Discover the intersection of science, ethics, and our cravings!
31:53
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Quick takeaways
- Recent advances in cryopreservation have revived frozen mouse brains, hinting at future possibilities for reviving human brains preserved in stasis.
- The phenomenon of 'dessert tummy' reveals that neurological processes drive sugar cravings even when we feel full, impacting obesity research.
Deep dives
Reviving Frozen Mouse Brains
Recent advancements in cryopreservation have shown that slices of mouse brains, which were frozen at minus 150 degrees Celsius, can be revived with near-normal electrical activity. A German research team discovered that the use of cryoprotectants prevents the formation of ice crystals that typically damage cells during freezing. Their successful revival of brain slices demonstrates the potential for preserving neural tissue for extended periods, which could greatly benefit neuroscience research. The implications of this research include the possibility of eventually cryopreserving entire brains, although challenges remain in applying these techniques to larger and more complex organs.
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