If you venture above sea level, air pressure and its corresponding density will decrease.

When he ventured his 6-foot-1 frame above ground, it was at enormous peril.

They ventured through side passages and up into chambers well above stream level.

But the next time he ventured above ground, what was his surprise to find everything changed!

Or so I had convinced my girlfriend, until we ventured out onto a promontory above the beach.

By the time your people could venture safely above the surface, their bodies had adjusted to a subterranean life-style.

Filming the foundation of a new colony was a considerable challenge because the insects rarely ventured above ground.

Skoraeus will never venture above ground, and cannot even be gated there.

On Tuesday, in the latest surge, the Dow leaped 179 points, and the next day it ventured above 7,000 again.

The sopranos, in particular, ventured above the staff with wonderful ease and security.