“This top-down breathing circuit has been a longstanding question in the neuroscience field. It’s exciting to find the neural mechanism to explain how the slowing down of breathing can control ...

Like all circuits, the Las Vegas Strip Circuit’s design and layout present their own quirks. The curbs are decorated with hearts, clubs, spades and diamonds, leaning into the casino theme.

In fact, a whole discipline called circuit sculpture exists that aims ... Time is kept by an ATtiny13A that counts mains frequency pulses. There’s no way to adjust the time: you’ll have ...

The projects we tried took the kids between 15 seconds (to build a simple circuit) and four minutes (to build a push button). These times felt short, but the kids on our first test panel liked how ...