The science laid out in a new U.N. report is clear and stark: Our fossil-fueled economy has irreversibly changed the global climate. Less certain is whether we’ll change lifestyles to confront rising seas and supercharged storms, according to scientists and policy analysts.
In a bid to stave off the dire effects of global warming on human health and the environment, the White House on Monday unveiled a new plan to slash carbon emissions from the power sector by 30 percent below 2005 levels by the year 2030.
“That’s like cancelling out annual carbon pollution from two-thirds of all cars and trucks in America,” Gina McCarthy, the administrator of the U.S. Environmental Protection Agency, said in announcing the new rules.
Recently, several scientific studies have concluded that the global climate is less sensitive to the greenhouse gas carbon dioxide than previously believed. Other studies also found that cuts to short-lived pollutants such as soot could temporarily slow the pace of warming.
Neither, however, are reasons to delay weaning the world off fossil fuels in a bid to curb global warming, according to a pair of perspective papers released Thursday.
The tools that scientists use to monitor the acidification of the world’s oceans are expected to get a major upgrade, thanks to a $2 million competition aimed at rewarding innovations that lower the cost and improve the accuracy of chemical sensors.
The Wendy Schmidt Ocean Health X Prize, unveiled Monday, is the latest multimillion-dollar prize program conducted by the California-based X Prize Foundation. Past prizes have targeted technologies ranging from commercial spaceflight to energy efficient cars— but the latest prize focuses on an even bigger global issue: climate change.
The greenhouse gas carbon dioxide emitted from power plants and other industrial activities around the world is a vast source of untapped energy, according to new research that describes a proof-of-concept technique to harvest it.
Akin to harvesting energy from the wind, this combination of chemistry and mechanics would generate electricity from the carbon dioxide (CO2) already flowing out of plants. While it wouldn’t destroy the CO2, it would pull far more energy from existing waste gas. It could arguably even enable plants to resist scaling up and becoming more wasteful, just to keep up with demand.
Oyster hatcheries are dropping the equivalent of Tums and other antacids into water to make it easier for naked mollusk larvae to build their shells. The remedy is working, for now, to keep hatcheries in business and oyster bars well stocked with the slimy delicacies, a hatchery scientist said.
Heartburn for the shellfish industry comes from ocean waters turning ever more corrosive as they absorb a fraction of the carbon dioxide humans are pumping into the atmosphere. The acidification, in turn, makes it harder for oyster larvae to build their shells.
The hatcheries’ antacid, sodium carbonate, makes the water less acidic and “raises the amount of carbonate in the water, which is what the shellfish are using,” Benoit Eudeline, the chief hatchery scientist at Taylor Shellfish Company in Quilcene, Wash., told NBC News.
Global emissions of the greenhouse gas carbon dioxide notched up 1.4 percent to 31.6 gigatonnes in 2012, a move in the opposite direction of an international climate goal to limit global warming, the International Energy Agency said in a report released Monday.
Instead of limiting warming to a long-term rise of no more than 3.6 degrees Fahrenheit (2 degrees Celsius), the report said the world is currently on a path toward a rise of as much as 9 degrees Fahrenheit (5.3 degree Celsius) above pre-industrial levels.
Such a rise would come “with potentially disastrous implications in terms of extreme weather events, rising sea levels, and the huge economic and social costs that these can bring,” Maria van der Hoeven, executive director of the International Energy Agency, said at the report’s launch.