Physics

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 has been selected as the world’s best university in the 2024 QS World University Rankings, reports Cecilia Rodriguez for Forbes. MIT has secured “the top position for the 12^th consecutive year,” writes Rodriguez.

Prof. Max Tegmark speaks with Guardian reporter Steve Rose about the potential of artificial intelligence. “The positive, optimistic scenario is that we responsibly develop superintelligence in a way that allows us to control it and benefit from it,” says Tegmark. “If we can build and control superintelligence, we can quickly go from being limited by our own stupidity to being limited by the laws of physics. It could be the greatest empowerment moment in human history.”

Herbert Kalmus ‘03 and former MIT Prof. Daniel Frost Comstock ‘04 co-founded Technicolor, the company that helped bring color to the movies. Boston Globe correspondent Scott Kirsner notes that the company’s name was “an homage to MIT, which publishes a yearbook called Technique.” Kirsner adds that Technicolor engineers “had to develop their own cameras, shooting and lighting techniques on set, film processing, and add-ons to the movie projector... Technicolor became one of the giants of 20th-century Hollywood.”

Sylvester James Gates Jr. ’73, PhD ’77 makes the case that “diverse learning environments expose students to a broader range of perspectives, enhance education, and inculcate creativity and innovative habits of mind. Science, technology, engineering, and mathematics (STEM) demand creativity—their research needs diverse thinking. This can be enhanced with equitable opportunities for all populations to participate in all institutions of higher education. My own life experience attests to this need.”

Astrophysicist Frank Shu '63, who is credited with making pivotal contributions to our understanding of galaxies and star formation, has died at the age of 79, reports Douglas Lin and Fred Adams for Nature. “For the past dozen years, his concern about the climate crisis led him to study the use of molten-salt reactors to generate energy from nuclear waste and to convert waste biomass into inert products that can be sequestered, removing carbon from the atmosphere,” write Lin and Adams.

Prof. Nergis Mavalvala, dean of the MIT School of Science, and postdoc Victoria Xu speak with Nature reporter Davide Castelvecchi about the upgrades to the LIGO gravitational wave detectors that have significantly increased their sensitivity. “The improvements should allow the facility to pick up signals of colliding black holes every two to three days, compared with once a week or so during its previous run." 

Upgrades made to the LIGO gravitational wave detectors “will significantly boost the sensitivity of LIGO and should allow the facility to observe more-distant objects that produce smaller ripples in spacetime,” writes Pennsylvania State University Prof. Chad Hanna in a piece for The Conversation.

Using the James Webb Space Telescope (JWST), postdoc Rohan Naidu and his colleagues will be using a giant cluster of galaxies to “gravitationally magnify the light of some smaller objects up to 750 million years after the big bang,” reports Jonathan O’Callaghan for Scientific American. “The goal is to look for clumps of primordial gas, which could contain clusters of Population III stars—the first stellar generation thought to have lit up the universe,” writes O’Callaghan.

Lisa Dyson PhD ‘04 founded Air Protein, a company looking to “bring recycled carbon cultivated into food with the taste and texture of chicken, meat, and seafood,” reports Geri Stengel for Forbes.    

Commonwealth Fusion Systems, MIT’s Plasma Science and Fusion Center and others are working to build SPARC, a prototype device that aims to extract net energy from plasma and generate fusion power, reports Philip Ball for Scientific American. “SPARC will be a midsize tokamak in which the plasma is tightly confined by very intense magnetic fields produced by new high-temperature superconducting magnets developed at MIT and unveiled in 2021.”  

Prof. Lindley Winslow speaks with Popular Science reporter Shannon Liao about how the new video game, “The Legend of Zelda: Tears of the Kingdom,” uses physics to help make the game more engaging. “The power comes from the fact that the physics are correct until it is fantastical,” says Winslow. “This allows us to immerse ourselves in the world and believe in the fantastical.”

Astronomers from MIT and elsewhere have become the first to witness a star consume an entire planet, reports Elisha Sauers for Mashable. “The new study confirms that when a sun-like star nears the end of its life, it expands into a red giant, 100 to 1,000 times its original size, eventually overtaking nearby planets,” explains Sauers. “Such events are thought to be rare, occurring only a few times each year throughout the galaxy.”

A team of astronomers, including researchers from MIT, witnessed a star swallowing up an entire planet for the first time, reports Margaret Osborne for Smithsonian Magazine. “For decades, scientists have only been able to witness the before and after of such planetary engulfment,” writes Osborne.

Researchers from MIT and elsewhere have observed, for the first time, a dying star consuming a planet, reports Jack Guy for CNN. “The fact that the solar system planets would get engulfed into the sun in the future was something I had read first in high school, so it was surreal to realize that we may have found the first ever example of catching a similar event in real time,” says postdoc Kishalay De.