Cities on Venus

Weekend space reading: "Colonizing Venus with Floating Cities." (Via my alma mater, Space.com.) Excerpt:

50 km above the surface, Venus has air pressure of approximately 1 bar and temperatures in the 0°C-50°C range, a quite comfortable environment for humans. Humans wouldn't require pressurized suits when outside, but it wouldn't quite be a shirtsleeves environment. We'd need air to breathe and protection from the sulfuric acid in the atmosphere.

Unless the Venusians come here first.