Sciencespeaking topic

The right and left of your body are controlled by the opposite half of the brain: your right hand is moved by the left brain. Why this crossing evolved is still not fully known. Why did nature choose such laborious wiring instead of connecting it straight?

— brain crossing / decussation

practice with this topic

Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.