Environment

MIT researchers have discovered that increased greenhouse gas emissions in the Earth’s upper atmosphere can “potentially cause catastrophic satellite collision in low-Earth orbit,” reports Bruce Dorminey for Forbes. “When the thermosphere contracts, the decreasing density reduces atmospheric drag — a force that pulls old satellites and other debris down to altitudes where they will encounter air molecules and burn up,” Dorminey explains. “Less drag therefore means extended lifetimes for space junk, which will litter sought-after regions for decades and increase the potential for collisions in orbit.”  

MIT researchers have found that high levels of greenhouse gas emissions in the atmosphere may increase the risk of satellite collisions, reports Sachi Kitajima Mulkey for Grist. “The environment is very cluttered already. Satellites are constantly dodging right and left,” says graduate student William Parker. “As long as we are emitting greenhouse gases, we are increasing the probability that we see more collision events between objects in space.” 

Associated Press reporter Seth Borenstein writes that MIT scientists have found that climate change could “reduce the available space for satellites in low Earth orbit by anywhere from one-third to 82% by the end of the century, depending on how much carbon pollution is spewed.” Graduate student William Parker explains: “We rely on the atmosphere to clean up our debris. There’s no other way to remove debris. It’s trash. It’s garbage. And there are millions of pieces of it.”

A new study by MIT researchers finds that “climate change could threaten the future use of satellites and significantly reduce the number of spacecraft that can safety orbit Earth,” reports Julia Jacobo for ABC News. The researchers found “global warming is causing space debris to linger above the planet for longer periods of time, leaving less space for functioning satellites and posing a growing problem for the long-term use of Earth’s orbital space,” Jacobo explains. “Reducing greenhouse gas emissions doesn't just help us on Earth, it also has the potential to protect us from long-term sustainability issues in space,” explains graduate student William Parker. 

A study by MIT scientists has found that increased greenhouse gas emissions will shrink the Earth’s upper atmosphere causing a “drop in the satellite-carrying capacity of low Earth orbit,” repots Passant Rabie for Gizmodo. “Without an atmosphere, most space debris would remain in orbit indefinitely,” Parker said. “As the atmosphere thins, debris lingers longer, increasing the risk to active satellites. With the growing consequences of space debris, we can accommodate fewer debris-generating events.”

Researchers at MIT have found that climate change could raise the risk of satellite collisions, reports Justine Calma for The Verge. “We’ve really reached the end of that era of ‘space is big,’ and I think we should stop saying that,” says graduate student, William Parker. “People don’t realize that the space sustainability issue is really an issue that impacts them directly.”

Forbes reporter Tom Teicholz spotlights the artistic work of alumna Lauren Bon. “Over the last two decades, as part of her art practice, Bon has undertaken projects that involve an exploration of urban natural resources in ways that have a positive environmental and societal impact,” writes Teicholz. 

Joe Higgins, MIT’s vice president for campus services and stewardship, speaks with Boston Globe reporter Sabrina Shankman about the Consortium for Climate Solutions, a new effort led by MIT, Harvard and Mass General Brigham to enable the development of large-scale renewable energy projects. “The science is telling us that we need to triple the amount of renewable energy on the power grids by 2030 and it’s not happening fast enough,” says Higgins. “It really came down to, we need new models … and how do we come together to do that with much greater impact, at a much greater speed?”

The Consortium for Climate Solutions, which is led by MIT, Harvard and Mass General Brigham, is enabling the development of a solar farm in Texas and a wind farm in North Dakota, which should generate enough renewable energy annually to power 130,000 homes, reports Martha Bebinger for WBUR. The effort is intended to “cut annual carbon dioxide emissions by 950,000 tons, about the equivalent of the carbon that trees covering 600,000 acres of forest would absorb in a year.”

Researchers at MIT have found that “more than 98% of prisons in the United States experienced at least ten days that were hotter than every previous summer, with the worst of the heat-exposed prisons concentrated in the Southwest,” reports Minnah Arshad for USA Today. s

MIT researchers have used a sonar imaging system to observe a “colossal congregation of cod consume over 10 million capelin,” reports Mark Kaufman for Mashable. This event “was the largest predation event ever documented in the ocean,” writes Kaufman. 

Using a sonar-based technique called Ocean Acoustic Waveguide Remote Sensing (OAWRS), researchers at MIT and elsewhere have tracked a swarm of cod off the coast of Norway eating millions of migrating capelin fish, reports Ed Cara for Gizmodo. Cara notes that in the future this technique could potentially allow “researchers and others to more easily monitor the health of these important fish and other life in marine ecosystems.”

Prof. Kerry Emanuel speaks with Associated Press reporter Terry Spencer about Tampa Bay’s vulnerability to incoming hurricanes. “It’s a huge population,” explains Emanuel. “It’s very exposed, very inexperienced and that’s a losing proposition. I always thought Tampa would be the city to worry about most.” 

Prof. Kerry Emanuel speaks with Washington Post reporters Sarah Kaplan, Shannon Osaka and Dan Stillman about the future of hurricane forecasting. “This is one thing that scares me, if these things can intensify more rapidly,” says Emanuel. “We’re going to have cases where forecasters go to bed with a tropical storm and wake up with a Category 5 when it’s too late to evacuate people.”

Los Angeles Times reporter Rosanna Xia spotlights Prof. Susan Solomon’s new book, “Solvable: How We Healed the Earth, and How We Can Do It Again,” as a hopeful remedy to climate anxiety. “An atmospheric chemist at MIT whose research was key to healing the giant gaping hole in our ozone layer, Solomon gives us much-needed inspiration — and some tangible ways forward,” explains Xia.