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pilot project that sought to demonstrate that carbon dioxide emissions could be locked up by turning them into rock appears to be a success. Tests at the CarbFix project in Iceland indicate that most of the CO2 injected into basalt turned into carbonate minerals in less than two years, far shorter a time than the hundreds or thousands of years that scientists had once thought such a process would take. Read more: http://www.smithsonianmag.com/science-nature/iceland-carbon-capture-project-quickly-converts-carbon-dioxide-stone-180959365/#GpYzrDcLOjF1tUZx.99 Give the gift of Smithsonian magazine for only $12! http://bit.ly/1cGUiGv Follow us: @SmithsonianMag on Twitter

Nearly all ocean dead zones will increase by the end of the century because of climate change, according to a new Smithsonian-led study. But the work also recommends how to limit risks to coastal communities of fish, crabs and other species no matter how much the water warms.

For years, clean energy advocates have pointed towards hydroelectricity as an important alternative to gas, coal and nuclear power plants. But a new study suggests that the dams and reservoirs commonly associated with this clean energy source are actually pumping a significant amount of carbon emission into the air.

Last month, the first comprehensive study on global bush meat consumption found that 113 species in Southeast Asia have dwindled to precarious numbers, primarily due to bush meat hunting and trapping. But while this region may be one of the worst affected, the study, published in Royal Society Open Science, reports that bush meat hunting is driving many of the world's mammals to the brink of extinction. "The large mammals are much more threatened than the small ones," says William Ripple, a professor of ecology at Oregon State University and lead author of the study. "This is likely because there is more meat on large mammals."

Conservationists got a mixed bag of news following an international group overseeing the world's species protection initiatives meeting this weekend. On the positive side, officials decided to officially take the giant panda off of the endangered species list, citing steady successes in preserving the bears' natural habitats. But though this is certainly a small victory, pandas are far from out of the woods when it comes to their species' long-term survival.

According to the Cheetah Conservation Fund, before 1900, the cheetah population numbered over 100,000 and its range included the majority of Africa through the Middle East and into Asia. Since then, however, the animal has gone extinct in more than 20 countries, with a mere 7,100 animals remaining globally

What's the best way to protect elephants? One way is refusing to buy ivory-demand for the material stokes poaching, which has demolished elephant populations in Africa. Now, the United States is taking an even stronger stance on ivory in a bid to protect the majestic creatures. As Jada F. Smith reports for The New York Times, the United States will now almost totally ban the sale of African elephant ivory.

Nepal had its first zero poaching year in 2011 and has had three 365-day stretches with no poaching since then, giving its 645 rhinos some breathing room. Last year, the herd grew by 21 percent. It's a bright spot in the bleak world of rhino conservation: In 2015 Africa lost a record 1,338 rhinos to poachers and in India's Kaziranga National Park, which is one of the last strongholds of rhinos on the subcontinent, poaching is still common.

More than 800,000 volunteers planted saplings in public spaces in the state of Uttar Pradesh hoping to reduce greenhouse gases and reforest the countryside

The map shows the world's carbon emissions from 1997 to 2010, say the scientists who made it. The data came from satellite measurements and reported emissions rates from factories and power plants, among other sources.

From deforestation to irrigation to species loss, the expanding human population has been dramatically re-shaping the face of the Earth. These interactive maps bring together a wealth of satellite imagery and other data sets to create an atlas of humanity's influence on the planet.

Thanks to the U.S. fracking boom, the world is coasting on a wave of cheap natural gas. As far as official forecasts suggest, that wave should last for decades to come. But a new analysis that takes a higher-resolution look at shale gas suggests that wave could crash far sooner than producers expect. And with the rest of the world anticipating cheap American gas, a crash could sends shocks rippling across borders

When people picture sand spread across idyllic beaches and endless deserts, they understandably think of it as an infinite resource. But as we discuss in a just-published perspective in the journal Science, over-exploitation of global supplies of sand is damaging the environment, endangering communities, causing shortages and promoting violent conflict.

Live Zero is part of a growing movement of "zero-waste" supermarkets that aim to end packaging waste by doing away with packaging altogether. The concept began in Europe more than a decade ago, and has since spread globally. There are now zero waste supermarkets from Brooklyn to Sicily to Malaysia to South Africa.

On January 31, The Hong Kong Legislative Council voted 49 to 4 to phase out the sale of antique ivory. As Tiffany May at The New York Times reports, the city will ban all sale of ivory, new and antique, by 2021, closing a system that poachers have previously exploited. The move will help staunch a significant player in the ivory market, which drives the destruction of elephant populations. In recent years, the United Nations estimates that poachers kill up to 100 elephants each day, which has devastated their populations.

A new product could help people in remote, parched places gain easy access to clean drinking water. The Warka Water, a 30-foot-tall tower shaped like a vase, uses a straw mesh and a nylon net to capture airborne humidity in the form of dew, which it then collects for human use. The device can reportedly gather more than 25 gallons of potable water in a single day, even in desert conditions

The Urban Algae Folly gazebo at Expo 2015 in Milan, Italy, is covered in algae-filled ethylene tetrafluoroethylene plastic that may herald the future of green building. The spirulina in the plastic membranes absorbs carbon dioxide and produces oxygen while expanding more as sunlight intensifies to provide shade. 

The team, at the Istituto Italiano di Tecnologia (IIT) in Genoa, is using coffee grounds to clean water, turning the grounds into a foam that can remove heavy metals like mercury. "We actually take a waste and give it a second life," says materials scientist Despina Fragouli. Her team took spent coffee grounds from IIT's cafeteria, dried and ground them to make the particles smaller. They then mixed the grounds with some silicon and sugar. Once hardened, they dipped it in water to melt away the sugar, which leaves behind a foam-like material.