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Welcome to Cool Stuff Daily. It is Wednesday, December 3rd, and my name as always continues to be Marcus Paff.

On this edition of the show, a new micro-robot that may swim through your veins and arteries using magnets to deliver medicine exactly where it's needed.

Plus, a singular gene that may be responsible for mental illness.

Both of those stories coming up right now.

The story comes to us from BBC Science Focus and author Hattie Wilmoth.

Scientists have developed a micro-robot that can deliver medicine exactly where it's needed

using magnets. This, according to a recent study from

ETH Zurich, a Swiss university. This new technology could enable doctors to dissolve

blockages that cause strokes, treat infections with antibiotics, and deliver anti-cancer medication

directly to tumors with outside effects elsewhere in the body.

The robot consists of a tiny spherical capsule made of a dissolvable gel and iron oxide nanoparticles,

which are added to make it magnetic. The scientists can track the robot using X-ray tech.

For the study's lead author, Dr. Fabian Landers, a postdoctoral researcher at the

multi-scale robotics lab at ETH Zurich, quote,

because the vessels in the human brain are so small, there is a limit to how big the capsule

...