Expo 2012 is happening now in Korea, and features a panorama of a futuristic underwater city as part of a focus on future sustainability.
Reporter Michael Geller writes that the theme of the Expo this year is "The Living Ocean and Coast":
"[T]he entire site is designed to form a model city that displays the low-carbon lifestyle we can expect in the future. Each of the theme pavilions demonstrates ways to achieve sustainable development by promoting an environmentally responsible use of the sea."
The exhibit proposes that desalinization will replace the need for maintaining a fresh water supply, and "Energy needs will be satisfied in part by biofuels made from seaweed and other marine resources and new bio-degradable plastics will be made from materials found in the sea."
Here's a promo video from Expo 2012 (which unfortunately doesn't include the underwater city):
FULL STORY: World's fair offers visions of the future

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

National Parks Layoffs Will Cause Communities to Lose Billions
Thousands of essential park workers were laid off this week, just before the busy spring break season.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50
A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

Test News Post 1
This is a summary

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

Test News Headline 46
Test for the image on the front page.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
EMC Planning Group, Inc.
Planetizen
Planetizen
Mpact (formerly Rail~Volution)
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research
NYU Wagner Graduate School of Public Service