CRISPR stem cell therapy grants lizards new regeneration powers

Lizards are famous for their regeneration, able to regrow their tails on demand, but the new tail is not quite perfect. Now, researchers at the University of Southern California (USC) have used stem cell therapy to let lizards grow better tails – bones… Continue reading CRISPR stem cell therapy grants lizards new regeneration powers

Scientists discover how stem cells trigger muscle regeneration

Researchers at the Salk Institute have uncovered a mechanism by which stem cells can help regenerate muscles. The discovery could provide a new drug target for repairing muscles after injury or rebuilding muscle mass lost during the normal aging proces… Continue reading Scientists discover how stem cells trigger muscle regeneration

Alligators found to regenerate lost tails in surprising study

Newts do it. Lizards do it. Even educated axolotls do it. Regenerating limbs isn’t something many animals can do, but now there’s a surprising new addition to the list – alligators. A new study has shown for the first time that young American alligator… Continue reading Alligators found to regenerate lost tails in surprising study

Spectrum Analyzer With 555 Fits In A Tin

[VK2ZAY] has a thing for 555 chips. Before the ready availability of microcontrollers, the 555 was the hardware hacker’s swiss army knife. After all, even though the chip is supposed to be a timer, it is really a bunch of simple pieces you can use to make a timer: a pair of comparators, a few transistors, and a flip-flop. You can use those parts in many different ways, and a timer is just one of them.

[VK2ZAY] used one as a key component in a simple spectrum analyzer. The 555 generates a ramp voltage which alters the frequency of an …read more

Continue reading Spectrum Analyzer With 555 Fits In A Tin