Planning a trip to Barcelona and wondering how to get around the city? You’ve come to the right guide! As a travel blogger that lives in Barcelona, I’ve spent plenty of time figuring out the best ways ...

While cities struggle with transport emissions, Barcelona quietly powered public transit with sewage-derived biomethane for half a decade. Urban transport creates a pollution nightmare that electric ...

WTF?! Human waste could one day usher in a new golden era of environmentally friendly infrastructure. Companies and researchers around the world are working to turn morning sludge into a legit source ...