Studies have previously estimated that the amount of land worldwide suitable for growing coffee could shrink by an estimated 50 percent by 2050 as global temperatures rise, rain patterns change, and ecosystems shift due to climate change. But a new study in the Proceedings of the National Academy of Sciences predicts a far worse situation for Latin America, the world’s largest coffee supplier: The region could lose nearly 90 percent of its coffee-growing land by mid-century.

Backyard chickens are permitted in a number of Canadian cities, including Vancouver, Victoria, Whitehorse and some boroughs of Montréal.

Wanda Martin would like to see Saskatoon on that list.

Areas in Latin America suitable for growing coffee face predicted declines of 73-88 percent by 2050. However, diversity in bee species may save the day, even if many species in cool highland regions are lost as the climate warms. The research, co-authored by David Roubik, senior scientist at the Smithsonian Tropical Research Institute, will be published in an early online Proceedings of the National Academy of Sciences edition between Sept. 11-15.

A century or two from now, people may look back at our current era — with its record-breaking high temperatures year after year, rapid disappearance of Arctic sea ice, and gradually rising sea levels — as part of a much cooler and far more desirable past. The spate of extreme weather events in the past month — which have devastated America’s fourth-largest city, Houston; spawned a massive hurricane that tore through the Caribbean and Florida; and swamped large swaths of India and Bangladesh — may well be a prelude to more monster hurricanes, Biblical rain events, and coastal inundations brought about by extreme weather and vastly higher sea levels.

There are currently an estimated 4.5 billion people around the world exposed to levels of particulate air pollution that are at least twice what the World Health Organization considers safe. Yet the impact of sustained exposure to pollution on a person’s life expectancy has largely remained a vexingly unanswered question—until now.

As the Arctic warms twice as fast as the rest of the planet, the range and distribution of at least some fish stocks found in places like the Bering Sea will likely extend northward. That could bring some big changes to the region. More than 60 percent of all seafood caught in the United States comes from the waters off Alaska and generates billions of dollars in revenue each year.

As previously ice-covered areas of the Arctic become seasonally ice-free, there will be pressure to expand US fishing north of the Bering Strait. That can’t happen under the Arctic Management Plan, established in 2009, which prohibits commercial fishing until scientists and fisheries managers understand what’s going on with the ecosystem.

Plastic pollution remains a major issue around the world, and now a new study suggests that microplastics have invaded our drinking water.

An investigation conducted by Orb Media and the University of Minnesota School of Public Health examined over 150 water samples from 14 countries across five continents — all in search of microfibers.

A global commitment to reduce health risks and environmental damage from mercury pollution came into effect last month (16 August), when the so-called Minamata Convention on Mercuryentered into force.

Monarch butterfly populations from western North America have declined far more dramatically than was previously known and face a greater risk of extinction than eastern monarchs, according to a new study in the journal Biological Conservation.

“Western monarchs are faring worse than their eastern counterparts,” said Cheryl Schultz, an associate professor at Washington State University Vancouver and lead author of the study. “In the 1980s, 10 million monarchs spent the winter in coastal California. Today there are barely 300,000.”

In the arid far-western region of South Africa is a vast flatland covered with white quartzite gravel known as the Knersvlakte – Afrikaans for “Gnashing Plain” – because it sounds like grinding teeth when you walk across it. It’s a good place to watch unpeopled horizons vanish into ripples of heat haze, but to appreciate its real value you must get down on your knees. The Knersvlakte holds about 1,500 species of plants, including 190 species found nowhere else on earth and 155 that are Red-Listed by conservation biologists as threatened with extinction. To protect them, 211,000 acres have been set aside as the Knersvlakte Nature Reserve.