Geology

Researchers from MIT and other institutions analyzed images captured by NASA’s Perseverance rover and found that Mars’ Jezero crater was a lake 3.7 billion years ago, reports Ashley Strickland for CNN. “The new information shows the importance of sending rovers to explore the surface of Mars,” writes Strickland. “Previous images captured by orbiters had shown that this outcrop resembled the kind of fan-shaped river deltas we have on Earth. Perseverance's images show definitive proof of the river delta's existence.”

Forbes contributor Michael T. Nietzel spotlights the work of Prof. Taylor Perron, who was awarded a 2021 MacArthur Fellowship. “By using mathematical modeling, computer simulations, and field studies, Perron is able to describe the environmental history of current landscapes and predict how landscapes will respond to future environmental changes," writes Nietzel.

CBS Boston spotlights how Prof. Taylor Perron has been honored with a 2021 MacArthur Fellowship for his work “unraveling the mechanisms that create landscapes on Earth and other planets.” CBS Boston notes that Perron is “currently studying river networks on Mars and one of Saturn’s moons for clues about the climate history of each celestial body.”

Prof. Taylor Perron has been named a recipient of the 2021 MacArthur Fellowship for his work investigating the processes that create a planet’s landforms, reports Ellen McCarthy for The Washington Post.

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. 

Inside Science reporter Tom Metcalfe writes that MIT researchers have developed a new method for taking the Earth’s temperature by examining basaltic rocks, and used the method to create a model of the Earth's oceanic ridges. "We are constantly stressing how [plate] tectonics operated in the past," says postdoc Stephanie Brown Krein. "And so I think it's really important for us to be able to understand how tectonics are working in the present day.”

In a conversation with New Scientist reporter Jonathan O’Callaghan, Prof. Tanja Bosak discusses her work with the NASA Perseverance rover’s rock reconnaissance mission. “In the middle of a pandemic, I think we needed something good to happen, and that’s why so many people wanted all the science and engineering that goes into landing a rover on Mars to succeed,” says Bosak. “As for what will happen when the samples come back – I can’t imagine. It’s going to be otherworldly.”

In an article for Scientific American, graduate students Meghana Ranganathan, Julia Wilcots, Rohini Shivamoggi and Diana Dumit call for the removal of racist language from the names of many geographic features and places in the United States. “We cannot have a just society when racist names are officially sanctioned,” they write. “We need a national, multifaceted push to change any instances of racial slurs and racist terminology in our natural land features.”

Gizmodo reporter Molly Taft writes that MIT graduate students have called for the removal of racist names from federal landmarks and other geographic features. “The geoscience community needs to have a conversation about how to handle these slurs and old place names in geoscience literature,” explains graduate student Meghana Ranganathan, “and we hope that galvanizing support amongst scientists will begin those conversations.”

"We are looking for remnants of past life," says Prof. Tanja Bosak in a discussion broadcast on GBH's Boston Public Radio of the NASA Perseverance rover’s mission on Mars. "There won't be anything that's a complex organism, so everything we have to look for is microscopic. All these rocks tell a story. Depending on their chemical properties and the way they look, we can tell a history and then decide which may have been good to preserve life."

WHDH reporter Aisha Mbowe spotlights how the MIT-designed Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE) is onboard NASA’s Perseverance rover.

Profs. Tonja Bosak and Jeffrey Hoffman speak with CBS Boston about the successful landing of the NASA Perseverance rover on Mars. Hoffman says of the MIT-designed Mars MOXIE experiment: “we are going to demonstrate how to make oxygen on the surface of Mars…we want to learn how to produce that on the surface of Mars and that’s what Moxie is going to demonstrate for the first time.”

Writing for The Conversation, graduate student Craig Robert Martin delves into his research exploring how the Himalayas were created. “By decoding the magnetic records preserved inside them, we hoped to reconstruct the geography of ancient landmasses – and revise the story of the creation of the Himalayas,” writes Martin.

Prof. Benjamin Weiss speaks with CNN reporter Ashley Strickland about how the Perseverance rover will select samples of Martian materials. "The key for this mission will be identifying samples so compelling that we can't afford to leave them," says Weiss. "We are selecting these for humanity, so we need to make sure they are the most exciting."

A study by MIT researchers uncovers evidence that the Earth’s global ice ages were triggered by a rapid drop in sunlight, reports Mashable. The researchers found that an “event like volcanic eruptions or biologically induced cloud formation will be able to block out the sun and limit the solar radiation reaching the surface at a critical rate that can potentially trigger ‘Snowball Earth’ events.”