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Recycling construction materials and water can make urban agriculture more sustainable. Lauren Moore/USDA

Urban agriculture isn’t as climate-friendly as it seems, but these best practices can transform gardens and city farms

A study of dozens of city gardens and urban farms across the US and Europe found several ways to boost their benefits, not just for their neighborhoods, but for the planet.
Workers from the Spanish nonprofit Open Waters rescue 178 migrants from different countries, off the coast of Italy in September 2023. Jose Colon/Anadolu Agency via Getty Images

The US is struggling to handle an immigration surge – here’s how Europe is dealing with its own influx

Germany and Italy are among the countries that are looking for ways to handle rises in undocumented migration and, in many cases, are making it harder for people to remain in their countries.
A ceremony to punish people for heresy, called an ‘auto da fe,’ in the town of San Bartolome Otzolotepec, in present-day Mexico. Museo Nacional de Arte/Wikimedia Commons

Latin America’s colonial period was far less Catholic than it might seem − despite the Inquisition’s attempts to police religion

Conversion was often a violent affair, but that doesn’t mean it was 100% successful. Colonial Latin America was home to many different spiritual traditions from Indigenous, African and Asian cultures.
The bow of the U.S. Coast Guard cutter Duane, a decommissioned ship deliberately sunk off Florida to serve as an artificial reef. Stephen Frink via Getty Images

Not all underwater reefs are made of coral − the US has created artificial reefs from sunken ships, radio towers, boxcars and even voting machines

Artificial reefs are structures that humans put in place underwater that create habitat for sea life. A new study shows for the first time how much of the US ocean floor they cover.