Bottom trawling harms the ocean—and the climate

1 day 13 hours ago
The destructive effects of ocean-bottom trawling are easy enough to imagine from any basic description of the practice. Heavy nets 100 yards wide, equipped with weighted rollers and steel doors, are dragged across the seafloor to scoop up cod, halibut, flounder, rockfish, shrimp and other deep-dwelling prey.

Corporations agree to transparency on climate lobbying

1 day 14 hours ago
Insurer American International Group Inc., railroad company CSX Inc. and electric companies Duke Energy Corp., FirstEnergy Corp. and Entergy Corp. have pledged to report publicly about their influence on climate policy and alignment with the Paris Agreement, according to investors.

Long-term consequences of carbon dioxide emissions

1 day 15 hours ago
The life of almost all animals in the ocean depends on the availability of oxygen, which is dissolved as a gas in seawater. However, the ocean has been continuously losing oxygen for several decades. In the last 50 years, the loss of oxygen accumulates globally to about 2% of the total inventory (regionally sometimes significantly more). The main reason for this is global warming, which leads to a decrease in the solubility of gases and thus also of oxygen, as well as to a slowdown in the ocean circulation and vertical mixing. A new study published today in the scientific journal Nature Communications shows that this process will continue for centuries, even if all CO2 emissions and thus warming at the Earth's surface would be stopped immediately.

A new drought monitoring approach

1 day 16 hours ago
A team of researchers, affiliated with UNIST has proposed a satellite-aided drought monitoring method that can adequately represent the complex drought conditions into a single integrated drought index. The newly-proposed drought index has attracted considerable attention as a new method for monitoring and forecasting drought hazards due to its accuracy with no space-time constraints.

Earth scientists call for prevention and warning systems for Himalayan flooding events

1 day 16 hours ago
A pair of earth scientists at the Indian Institute of Technology–Kanpu are calling for flood prevention and warning systems in areas around the Himalayan mountains to protect people from floods or to warn them of impending disasters. In their Perspectives piece published in the journal Science, Tanuj Shukla and Indra Sen point out that rising temperatures due to global warming are leading to an increase in flood danger for people who live in the area.

Switzerland consumes 87 million tons of material each year

1 day 17 hours ago
Buildings, industrial plants, roads, cars, gasoline, electricity and all other consumption: What does Switzerland consume each year? How much of it is exported or disposed of? How much flows back into the economy? And what are the consequences for the environment? For a research team at Empa's Technology and Society lab, finding precise answers to these questions was a complex task.

NASA-built instrument will help to spot greenhouse gas super-emitters

1 day 18 hours ago
NASA's Jet Propulsion Laboratory in Southern California is providing the instrument that will enable a nonprofit organization called Carbon Mapper to pinpoint and measure methane and carbon dioxide (CO2) point-sources from space. The data collected by the instrument will help to find super-emitters—the small percentage of individual sources that are responsible for a significant fraction of global emissions of methane and carbon dioxide.

How the humble woodchip is cleaning up water worldwide

2 days 9 hours ago
Australian pineapple, Danish trout, and Midwestern U.S. corn farmers are not often lumped together under the same agricultural umbrella. But they and many others who raise crops and animals face a common problem: excess nitrogen in drainage water. Whether it flows out to the Great Barrier Reef or the Gulf of Mexico, the nutrient contributes to harmful algal blooms that starve fish and other organisms of oxygen.
2 minutes 19 seconds ago
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