In the past 540 million years, the Earth has endured five mass extinction events, each involving processes that upended the normal cycling of carbon through the atmosphere and oceans. These globally fatal perturbations in carbon each unfolded over thousands to millions of years, and are coincident with the widespread extermination of marine species around the world. 

Many of the cities in northern Japan damaged by the 2011 earthquake and tsunami are building back their electric grids with renewable energy and micro-grids — bucking the nation’s old, centralized utility system by making communities in the region self-sufficient in generating electricity, Reuters reported.

Bigger than any medieval castle, with its 12 giant white cooling towers gleaming in the sun, the Drax Power Station dominates the horizon for tens of miles across the flat lands of eastern England. For four decades, it has been one of the world’s largest coal power plants, often generating a tenth of the U.K.’s electricity. It has been the lodestar for the final phase of Britain’s 250-year-long love affair with coal – the fuel that built the country’s empire and industrialized the world.

A discovery by Indiana University researchers could advance the long-term storage of nuclear waste, an increasingly burdensome and costly task for the public and private agencies that protect people from these harmful chemicals.

A new study published today in the scientific journal Marine Policy shows that banning the sale of shark fins within the United States can actually harm ongoing shark conservation efforts.

David Shiffman of SFU’s Earth2Ocean research group and Robert Hueter from the Center for Shark Research at Mote Marine Laboratory in Florida say that a proposed nationwide ban on shark fin sales within the United States is a misguided and ineffective approach to protecting sharks.

A new study evaluating models of future climate scenarios has led to the creation of the new risk categories “catastrophic” and “unknown” to characterize the range of threats posed by rapid global warming. Researchers propose that unknown risks imply existential threats to the survival of humanity.

These categories describe two low-probability but statistically significant scenarios that could play out by century’s end, in a new study by Veerabhadran Ramanathan, a distinguished professor of climate and atmospheric sciences at Scripps Institution of Oceanography at the University of California San Diego, and his former Scripps graduate student Yangyang Xu, now an assistant professor at Texas A&M University.

Climate change will force many amphibians, mammals and birds to move to cooler areas outside their normal ranges, provided they can find space and a clear trajectory among our urban developments and growing cities.

The Trump administration has announced that a federal goal to slash the cost of utility-scale solar energy to 6 cents per kilowatt-hour by 2020 has been met early. The goal, set by the Obama administration in 2011 and known as the SunShot Initiative, represents a 75 percent reduction in the cost of U.S. solar in just six years. It makes solar energy-cost competitive with electricity generated by fossil fuels.

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.