boundary

And since a 12-day war with Israel earlier this year, Iranians have been pushing social boundaries further still.

It’s pathetic, dangerous, and shows a total lack of respect for boundaries, safety, and basic human decency.”

Startups funded by Silicon Valley billionaires are pushing the boundaries of reproductive genetics, hoping to prevent diseases and improve the chances for preferred traits.

But we let go, careful not to cross the boundary that had quietly become sacred between us.

According to the researchers, this pattern demonstrates that even the most highly trained athletes eventually hit a metabolic limit, and sustaining anything above that boundary is extremely difficult.