Aerial view looking south toward the Gulf of Mexico down the Wax Lake Delta, Louisiana. Photo © Carlton Ward Jr.   New York City faced a challenge in the 1990s: the city needed a new water…

Andrea Erickson |

Also available in: Spanish Road with independent space for pedestrians, cyclists and cars in San Isidro. Photo: World Bank We all have an intuitive sense that pedestrians are particularly…

Irene Portabales González, Sofía Guerrero Gámez, Ignacio Sánchez D’Ocon, Juan Miguel Velásquez |

Photo: Tony Salas | Flickr Creative Commons In my home state of California in the United States, major drought-fueled wildfires tore across the state in the latter half of 2017 setting records for…

Sunny Kaplan |

© Ursula Meissner/The Nature Conservancy The North Atlantic hurricane season officially opens June 1, and there are predictions that storms this year could be worse than average again. That would…

Michael W. Beck, GM Lange, Siddharth Narayan |

Dockless bikes typically sport bright colors that make them easy to identify. Photo: Montgomery County/Flickr How can we harness the digital economy to make mobility more sustainable? This…

Leonardo Canon Rubiano |

Around 250 million migrants currently live outside their countries of birth, making up approximately 3.5 percent of the world population. Despite the widespread perception of a global migration…

Caglar Ozden |

Photo: Stefan Georgi/Flickr Back in 2012, a storm surge triggered by Super Storm Sandy caused extensive damage across the New York City (NYC)-New Jersey (NJ) Metropolitan Area, and wreaked havoc…

Ramiro Alberto Ríos, Georges Darido, Ramon Munoz-Raskin, Daniel Pulido |

Cities are becoming thirstier – a 50 percent increase in urban water demands is anticipated within the next 30 years. Rapid urban population growth, economic expansion, and competing demands are…

Lauren Nicole Core, Stephane Dahan, Richard Abdulnour, Clementine Marie Stip |

Las Vegas via Andrey Bayda / Shutterstock.com What do casinos in the Las Vegas desert, beachside cultural sites in Malta, and palm groves around centuries-old markets in Marrakech have in common?…

Richard Abdulnour, Lauren Nicole Core, Stephane Dahan |