A team of researchers has shown that in urban landscapes -- such as in the cracks of sidewalks -- plant species must evolve their reproduction habits to stay alive.
"As concrete slabs chop up more and more of our urban landscapes, plants are forced to evolve in ways that may not benefit them in the long run, a new study suggests."
"As a plant or any organism's habitat becomes fragmented - whether by intervening sidewalks and roads in cities or by logging in rain forests - it can be cut off from other members of its species, making reproduction more difficult."
"Ecologists at the National Center for Scientific Research (CNRS) in France studied how a weed, Crepis sancta, changed its reproductive strategy when faced with ever-increasing amounts of concrete sidewalks."
FULL STORY: Urban landscapes force plants to evolve
How to ID Urban Wildflowers
Ever wonder what those flowers growing through a crack in the sidewalk are? This guide from Streetsblog has you covered.
Finding New Uses for the 'Vine That Ate the South'
Visually striking and aggressively invasive, kudzu has been choking the Southeast for decades. Now, designers, chefs, and activists want to find ways to make it useful.
The Earth's Vegetation Stopped Expanding 20 Years Ago
Until the late 1990s, the amount of vegetation worldwide was increasing. But then it stopped, and a new study links this troubling trend to climate change.
Pennsylvania Mall Conversion Bill Passes House
If passed, the bill would promote the adaptive reuse of defunct commercial buildings.
Planning for Accessibility: Proximity is More Important than Mobility
Accessibility-based planning minimizes the distance that people must travel to reach desired services and activities. Measured this way, increased density can provide more total benefits than increased speeds.
World's Largest Wildlife Overpass In the Works in Los Angeles County
Caltrans will soon close half of the 101 Freeway in order to continue construction of the Wallis Annenberg Wildlife Crossing near Agoura Hills in Los Angeles County.
Amtrak Takes Lead on Texas Central Rail
The high-speed rail project isn’t a done deal, but if it moves forward, trains could begin operating in 2030.
Maine Approves Rent Relief Program
Legislators hope the assistance program will help struggling low-income households avoid eviction.
How Transit Architecture Impacts Real and Perceived Safety
More than a third of Americans believe major transit systems are too unsafe to ride. The built environment can change that.
City of Costa Mesa
Licking County
Barrett Planning Group LLC
HUD's Office of Policy Development and Research
Mpact Transit + Community
HUD's Office of Policy Development and Research
Tufts University, Department of Urban and Environmental Policy & Planning
City of Universal City TX
ULI Northwest Arkansas
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.
