Humans produce around 4.4 billion tons of concrete every year.
“Let’s see what a Snickers bar does to my blood sugar,” Justin Richard, a 52-year-old Toronto-based TikToker says just before eating the candy bar on camera. After an edited time skip, Richard says, “It’s been several hours since I’ve had the chocolate bar, let’s have a look at the glucose monitor and see what actually happened.” He slightly lifts his arm flashing the device, an inconspicuous blue circular patch that almost looks like a Band-Aid. Above his head flashes a screenshot of his blood glucose reading, which appears to have spiked, dipped, and spiked again.
Engine knock, wherein fuel ignites unevenly along the cylinder wall resulting in damaging percussive shockwaves, is an issue that automakers have struggled to mitigate since the days of the Model T. The industry's initial attempts to solve the problem — namely tetraethyl lead — were, in hindsight, a huge mistake, having endumbened and stupefied an entire generation of Americans with their neurotoxic byproducts.