Scientists at the University of Manchester have recorded a cell’s final pulse of electrical activity. As part of an experiment to understand cellular signaling mechanisms, the researchers built an array of charge-sensitive semiconductor electrodes and placed a yeast cell on top of it (left). The researchers detected variations between charge readings from the electrodes, measuring the flow of ions that cells need to stay alive. After dousing the cell with ethanol to make its electrical activity easier to detect, physicist Andre Geim measured ion flow to a resolution of about 10 ions. Sadly, the ethanol killed the cell. The last detectable ion reading “was probably the last gasp,” Geim says.
The gene-edited pig heart given to a dying patient was infected with a pig virus
The first transplant of a genetically-modified pig heart into a human may have ended prematurely because of a well-known—and avoidable—risk.
Saudi Arabia plans to spend $1 billion a year discovering treatments to slow aging
The oil kingdom fears that its population is aging at an accelerated rate and hopes to test drugs to reverse the problem. First up might be the diabetes drug metformin.
Yann LeCun has a bold new vision for the future of AI
One of the godfathers of deep learning pulls together old ideas to sketch out a fresh path for AI, but raises as many questions as he answers.
The dark secret behind those cute AI-generated animal images
Google Brain has revealed its own image-making AI, called Imagen. But don't expect to see anything that isn't wholesome.
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