Illegal and unregulated gold mining that destroys the rainforest and pollutes rivers and groundwater with mercury is a threat that is also driven by markets and greed.
Even low levels of lead can cause harm to children, but 22 states, including North Carolina, don't require schools and day cares to test the levels of lead.
The technology company hopes the initiative, which has destroyed about 70,000 mosquito breeding sites, will be expanded to other cities in Colombia and across the continent.
Protest against new mining projects across Latin America are increasingly being quashed, according to NGOs. Mining of the raw materials is also fomenting social and political unrest.
The project would extract 1.2 million tonnes of sand every year for the next half-century was approved by the Manitoba government without federal review or indigenous input.
The front of Hornsundbreen is retreating every year and will eventually open a new strait between the Barents- and Greenland Seas through the island of Spitsbergen.
The amount of water flowing down the lower Missouri River this year is approaching the record set during the historic 2011 flood, and another round of flooding is expected this week.
Officials say a sensor attached to the American Queen riverboat will give scientists and cities and better understanding of nutrient levels and water quality along the entire length of the Mississippi River.
Emma Guiney has sworn off holiday destinations with mosquito-borne diseases. As the climate changes, they will likely be on her doorstep. Such diseases are one of the many health challenges Sydney faces as its population booms in the next decade.
The UK will experience increasingly extreme weather by the 2070s, including four heatwaves a year and almost twice the amount of current flash flooding, according to new data from the Met Office.
The Arctic is generally considered an early warning system for the impact of climate change, and scientists are hoping this expedition will raise their understanding of it to a whole new level.
Although it supports efforts to fight climate change and its impact on the world's oceans, the fishing industry fears it could be harmed by one of the promising solutions: the offshore wind energy industry. A
Tornadoes are the most challenging tempests that the National Weather Service workers in Alabama typically handle. But all that changed with a faulty Hurricane Dorian tweet by the president.
Colorado and California are rethinking water management for a hotter, drier future, while balancing urban water needs with the benefits agriculture brings to rural communities.
Warming within the swirling ocean depths of the Gulf of Maine has implications for all life and livelihoods within the ecosystem. Scientists, fishermen and aquaculturists brace for challenges.
By the time it was clear that Dorian would be the strongest hurricane ever to hit the Bahamas, it was too late for most people in Grand Bahama and the Abacos to react or flee.
Dana Zartner: Toledo voters just gave legal rights to Lake Erie, an important step toward keeping it clean