Contraflow: when compared to people or cars, salmon still have it the toughest.

It’s hard not to wonder if there are unspoken rules that explain why well-moving vehicular traffic operates in much the same configuration as human crowds in a congested, spatially constrained setting. Which came first? Well, humans/pedestrians obviously. But vehicular motion remains subject to numerous regulations in the interest of safety for pedestrians and other vehicles.

Tsunami tsignage: where to turn when the tidal tsurge tstrikes.

In the past, I’ve blogged about warnings of eminent disaster that owe their presence almost completely to geography: one of the nation’s busiest airports is replete with signs encouraging visitors to take shelter in the restrooms in the event of a tornado. Most Chicagoans (and most Midwesterners in general) know from a very young age

The Wharf of Washington DC: the shopping destination of the hour (but not the day).

Ever since it opened in late 2017, Washington DC’s mixed-use waterfront development known as The District Wharf (“The Wharf”) has become a premier attraction for locals and visitors who are in the know. Unlike so many riverfront investments in recent years, it doesn’t look like a single developer conceived it, even though it owes most