Carbon dioxide

ClimateWire reporter John Fialka writes that MIT engineers have developed a new process to convert carbon dioxide into a powder that can be safely stored for decades. “The MIT process gets closer to an ambitious dream: turning captured CO2 into a feedstock for clean fuel that replaces conventional batteries and stores electricity for months or years,” writes Fialka. “That could fill gaps in the nation's power grids as they transition from fossil fuels to intermittent solar and wind energy.”

An analysis by the MIT Sloan Sustainability Initiative and Climate Interactive has found that planting a trillion trees would only prevent 0.27 degrees of warming by 2100, reports Maxine Joselow for The Washington Post. “Trees are great. I personally love to be out in the forests as much as I possibly can,” says Prof. John Sterman. “But the reality is very simple: You can plant a trillion trees, and even if they all survived, which wouldn’t happen, it just wouldn’t make that much difference to the climate.”

Researchers at MIT have discovered that the ocean’s color has changed considerably in the last 20 years and is “another warning sign of human-driven climate change,” reports Maria Luisa Paul for The Washington Post. “These ecosystems have taken millions of years to evolve together and be in balance,” says Senior Research Scientist Stephanie Dutkiewicz. “Changes in such a short amount of time are not good because they put the whole ecosystem out of balance.”

A study by MIT researchers has found that over 65% of the world’s oceans have changed color over the past 20 years and “human-caused climate change is likely to blame,” reports Rebecca Falconer for Axios. The researchers found that: “Tropical ocean regions near the equator have been particularly affected by this steady change from blue to green,” Falconer notes. 

MIT researchers have found that over the past two decades, the color of the world’s oceans has changed significantly, reports Talib Visram for Fast Company. The change “is likely due to human-induced climate change,” explains Visram. “The color shifts matter in that they signal changes in ecosystem balance, which have the power to disrupt fragile marine food webs.”

CNN reporter Jack Guy spotlights a new study co-authored by researchers at MIT, which shows that the ocean’s color has changed considerably over the last 20 years and human-caused climate change is likely responsible. “All changes are causing an imbalance in the natural organization of ecosystems,” says senior research scientist Stephanie Dutkiewicz. “Such imbalance will only get worse over time if our oceans keep heating.”

Researchers at MIT and elsewhere have discovered that the ocean’s hue has changed significantly over the last 20 years, reports Laura Baisas for Popular Science. “A shift in ocean color is an indication that ecosystems within the surface may also be changing,” writes Baisas. “While the team can’t point to exactly how marine ecosystems are changing to reflect the shift, they are quite sure that human-induced climate change is likely behind it.”

A new study led by a team including researchers at MIT has found that more than half of the world’s ocean has changed color in the last 20 years, reports Coco Liu for Bloomberg. “The color shift could be caused by changes in plankton communities that are critical to the marine food chain,” writes Liu. “And biodiversity isn’t the only thing at stake: The shift could also affect how much carbon dioxide the ocean takes up, since different types of plankton have different abilities to absorb it."

MIT researchers have developed a new compact, lightweight design for a 1-megawatt electrical motor that “could open the door to electrifying much larger aircraft,” reports Ed Gent for IEEE Spectrum. “The majority of CO₂ is produced by twin and single-aisle aircraft which require large amounts of power and onboard energy, thus megawatt-class electrical machines are needed to power commercial airliners,” says Prof. Zoltán Spakovszky. “Realizing such machines at 1 MW is a key stepping stone to larger machines and power levels.”

MIT researchers have developed a new two-step electrochemical process to remove carbon dioxide out of seawater, reports John Fialka for E&E News.  The new approach “cuts energy costs and expensive membranes used to collect CO2 to the point where merchant ships that run on diesel power could collect enough CO2 to offset their emissions,” Fialka writes.  

Vice reporter Becky Ferreira writes that a study by MIT scientists examining extreme climate events in the Earth’s history finds that as the planet warms we could be more susceptible to volatile climate extremes. “I think these results emphasize that Earth's long-term evolution is governed by complex, potentially amplifying mechanisms that we do not yet fully understand,” explains graduate student Constantin Arnscheidt. 

Prof. Michael Strano speaks about his research on carbon-fixing materials, which are “substances powered by the sun that use atmospheric carbon dioxide to grow and repair themselves, just as plants do,” writes Marlene Cimons for Popular Science. “Making a material that can access the abundant carbon all around us is a significant opportunity for materials science,” said Strano.

Martin LaMonica writes for The Boston Globe about how MIT researchers are creating a commercial prototype of a carbon capture device. Graduate student Aly Eltayeb explains that carbon capture could be useful in cutting carbon emissions, “especially if you can do something with that CO2 and stop treating it as a waste — and treat it as a valuable product.”

New research by Professor Daniel Rothman and postdoctoral associate Yossi Cohen has raised questions about the feasibility of carbon capture, reports Ken Silverstein for Forbes. The researchers found that “only a ‘small fraction’ of the carbon dioxide solidifies and turns into rock after it is injected 7,000 feet below the earth’s surface,” explains Silverstein. 

MIT researchers have found that carbon sequestration may not be as effective at storing greenhouse gas emissions as originally thought, reports Christopher Martin for Bloomberg News. The researchers found that “much of the carbon dioxide will remain in its gaseous state, and may eventually escape into the atmosphere.”