The quality of asphalt binder — the glue that holds roads together — influences their condition. Binder made from Alberta bitumen is low in waxes and could extend pavement lifespan.
Tackling climate change is a budget priority, but will we see the major investment in cycling infrastructure and public transport that is one obvious solution?
Fresh grizzly bear tracks in Yellowstone National Park.
Jacob W. Frank, NPS/Flickr
Parks and refuges are important for conservation, but without connections, they’re like islands. Linking them by protecting land in between makes it possible for wildlife to move over bigger areas.
Tourists cross a hanging bridge in the treetops of Costa Rica’s Monteverde cloud forest.
Matthew Williams-Ellis/Universal Images Group via Getty Images
Tourism revenues account for almost 10% of Costa Rica’s gross domestic product. New research shows that charismatic wildlife is necessary but not sufficient to attract ecotourists.
Lavinia Perumal, University of Cape Town; Mark New, University of Cape Town; Matthias Jonas, International Institute for Applied Systems Analysis (IIASA), and Wei Liu, International Institute for Applied Systems Analysis (IIASA)
The presence of roads, even inside protected areas, may pose a significant threat to species.
Prime Minister Scott Morrison driving a hydrogen-fuelled car in Melbourne.
AAP Image/Pool, William West
Alaska is warming faster than any other U.S. state, and that’s causing problems, a team of bridge engineers and social scientists explains. The infrastructure bill in Congress would offer some help.
Two urban policy experts explain why taking down highways that have isolated low-income and minority neighborhoods for decades is an important part of the pending infrastructure bill.
Constructing barge canals took a massive investment that didn’t pay off.
New York State Archives
The Tongass National Forest in Alaska, a focus of political battles over old-growth logging and road-building in forests for decades, has received new protection from the Biden administration.
A white-tailed deer crossing a road in Nova Scotia, Canada.
Martin Mayer
Sat-navs could one day warn motorists when they drive through high-risk areas.
In 1872, John Gast painted ‘American Progress,’ showing trains and roads spreading across the American West.
John Gast, Library of Congress via Wikimedia Commons