Mexico City's water system is fragile, because the growth of the population has put a heavy burden on the underground aquifer that feeds the city. So some entrepreneurs have devised a system to collect and store rain water, to keep houses supplied.
Prairie dogs used to rule the prairies of America and Mexico. But when ranchers moved in, prairie dogs were exterminated. Now, an ecologist says the black-tailed prairie dogs are critical for turning Mexico's desert back into prairie.
In his inaugural address on Monday, President Barack Obama spoke of America's need for renewable energy. But with Nebraska Governor Dave Heineman's recent approval of the Keystone XL pipeline, Obama is faced with a new front in the ongoing energy debate.
Soaring demand and soaring prices for tuna on the global market has sent fishing through the roof. It's also led to a dramatic decline in tuna populations. The waters off a handful of central Pacific islands have the only remaining healthy populations -- and those are coming under threat now too.
Jakarta is often beset with flooding, but heavy rains and commercial developments made the past week's flooding especially widespread, and also especially egalitarian -- inundating the homes of both the poor and the wealthy.
Residents of Beijing an other parts of northern China are still dealing with terrible pollution, but it's not nearly as bad as it was on Saturday, when pollution levels exceeded the scales used to measure such problems. But while the pollution is horrible, China's not the first place to deal with deadly pollution.
While they didn't get everything they wanted in President Barack Obama's first term, nor did they get all they asked for at the ballot box in November, environmental activists are bullish about how the second Obama term will play out, in regard to the environment.
You've almost certainly seen fungus throughout the environment. Growing on top of, inside of and underneath all sorts of surfaces. But fungus, which may be a nuisance to you, make up an incredibly important part of the ecosystem.
For companies doing business in California, a new environmental law is about to go into effect. It is expected to raise the cost of doing business for companies with carbon emissions.
As we ring in 2013, it's worth taking a moment to look back on 2012. These stories were the most popular on PRI.org this year — and they run the gamut. From animals to weird science, the PRI.org audience proved, again, they you all go for variety.