Emissions

A study by Prof. Daniel Rothman shows that there could be enough carbon in the Earth’s oceans by 2100 to trigger a sixth mass extinction, reports Mark Fischetti and Jen Christiansen for Scientific American. 

A new study by MIT researchers found that the Clean Air Act has had a larger impact on reducing the mortality rate than originally thought, reports Alan Moses for U.S. News & World Report. The researchers found that, “the decline in organic aerosol may account for more lives saved than the EPA had estimated.”

In an article for The Wall Street Journal, Christopher Matthews highlights a new study by Prof. Kerry Emanuel that shows Texas faces an increased risk of devastating rainfall due to climate change. The study demonstrated how greenhouse gas emissions, “help warm offshore waters—a phenomenon that can magnify the severity of storms and generate more rain, creating bigger floods.”

In a letter to The Financial Times, Prof. Jessika Trancik, postdoc Geoffrey Supran, and graduate student Marco Miotti clarify results from a study the lab released last year that compares emissions of gas and electric vehicles. “Not only do electric cars usually emit less than petrol ones already, but over time, as the carbon footprint of electricity continues to fall, that gap will widen,” the researchers explain.

Prof. Kerry Emanuel released a new paper that analyzes the impact of Hurricane Harvey, writes  Bloomberg’s Eric Roston. Emanuel found that “Harvey’s rainfall in Houston was ‘biblical’ in the sense that it likely occurred around once since the Old Testament was written.”

Writing for U.S. News & World Report, Alexa Lardieri highlights how Prof. Daniel Rothman has analyzed carbon changes over the past 540 million years and found that the next mass extinction could start in 2100. Rothman found that, “mass extinctions can occur if changes in the carbon cycle over long time periods outpace global ecosystems' abilities to adapt to those changes.”

In this video, Nicholas Cardona reports for USA Today that Prof. Daniel Rothman has predicted that the Earth’s next mass extinction event could begin in 2100, based on an analysis of the last five mass extinction events. Rothman found that, “each of the events saw high increases in global carbon. That leads to a destabilized ecosystem,” Cardona reports. 

In a new study, Prof. Daniel Rothman has predicted that the oceans may hold enough carbon to trigger a sixth mass extinction by 2100, reports Trevor Nace for Forbes. Rothman’s analysis showed that, “given the current rate of carbon being emitted into the atmosphere, we will likely reach a mass extinction threshold by the year 2100.”

HuffPost reporter Thomas Tamblyn writes that Prof. Daniel Rothman has analyzed the Earth’s five previous mass extinctions and found that a sixth could be triggered by 2100. Rothman found that, “if a certain amount of carbon dioxide was added to the oceans on top of its existing levels it would result in a sixth mass extinction event.”

A new study by Prof. Daniel Rothman provides evidence that by 2100 the world’s oceans may hold enough carbon to trigger a sixth mass extinction, reports Alyssa Meyers for The Boston Globe. Rothman found that if, “310 gigatons of carbon dioxide are added to the oceans, it could be a crucial tipping point for the carbon cycle.”

Research Scientist Jennifer Morris writes for Salon about her research showing that power companies should invest in carbon-free power sources despite uncertainty about future U.S. emissions limits. Morris and her colleagues found that investing in carbon-free sources, “best positions the United States to meet a wide range of possible future policies at a low cost to the economy.”

AP reporter Katy Daigle writes that climate change could drive heat and humidity to extremes in regions of South Asia. Daigle explains that, “with no limit on global warming, about 30 percent of the region could see dangerous wet bulb temperatures above 31 degrees C (88 degrees F) on a regular basis within just a few decades.”

A new study by MIT researchers finds that climate change could cause deadly heat waves in South Asia by the end of the century, reports Nicole Riva for CBC News. The research demonstrates what could happen if “we keep going in this trajectory of no action related to climate change or minimal action,” says Prof. Elfatih Eltahir.

Washington Post reporter Chelsea Harvey writes that MIT researchers have found that millions of people in South Asia could experience deadly heat waves by the end of the century. Without reductions in greenhouse gas emissions, “certain areas of South Asia are projected to occasionally experience extreme conditions exceeding the lethal threshold, including parts of northeastern India and Bangladesh.”

Justin Worland reports for TIME on a new study by MIT researchers that shows by the end of the century millions of people living in South Asia could experience temperature and humidity conditions that exceed habitable levels. “The disastrous scenario could be avoided if countries meet their commitments to keep temperatures from rising more than 2°C (3.6°F) by 2100.”