Animals

Using molecular evidence buried in rocks, researchers at MIT suggest that some of the Earth’s first living creatures are ancestors of the modern sea sponge, reports Ashley Fike for Vice. “The discovery suggests the earliest animals were simple, filter-feeding organisms that slowly cleaned the seas while the rest of the evolution was still figuring itself out,” says Fike. “These early sponges likely had no skeletons, nerves, or eyes – just porous bodies that absorbed water and nutrients. Yet they paved the way for everything that came next, from insects to mammals to us.” 

A new study by MIT researchers suggests sea sponges may have been the “first animals to inhabit the Earth,” reports Maria Azzura Volpe for Newsweek. “In their work, the researchers linked so-called ‘chemical fossils’ found in ancient rocks to the ancestors of a class of modern-day sea sponges known as demosponges,” explains Volpe. “These chemical fossils—the molecular remnants of once-living organisms that have been buried, transformed, and preserved in sediment over time—were discovered in rocks that date back to more than 541 million years ago, during the Ediacaran Period.” 

MIT researchers have uncovered new evidence that suggests some of Earth’s first living creatures are ancestors of the modern sea sponge, reports Andrew Paul for Popular Science. The researchers identified 541 million-year-old chemical fossils embedded in sediment that they believe may indicate that some of Earth’s earliest creatures were the ancient relatives of today’s sea sponges. 

Researchers at MIT have found that “tropical forests populated with a diversity of seed-dispersing animals can accumulate carbon up to four times as fast as fragmented forests where these animals are absent or their movement is restricted,” reports James Dinneen for New Scientist. “This shows a linkage between animal biodiversity loss and a process that exacerbates climate change,” says research scientist Evan Fricke. “We’re losing the regrowth potential of tropical forests.”

Research Scientist Peter Gloor speaks with Forbes reporter Vibhas Ratanjee “about how we can learn from the natural world—specifically social insects—to improve teamwork and innovation in modern workplaces.” Ratanjee notes that: “Gloor is a strong advocate for biophilic design—an approach that integrates nature into work environments to boost well-being and creativity. And the science backs him up: Studies have found that employees who work in spaces with natural light, plants and open-air designs report higher job satisfaction and lower stress levels.” 

Prof. Alan Lightman speaks with Boston Globe correspondent Kate Tuttle about his new book, “The Miraculous from the Material: Understanding the Wonders of Nature,” in which Lightman “celebrates the phenomena that inspire awe.” Lightman explains: “I think the humanities are even more important now in a period of exponentially advancing technology. We really have to think hard about what makes us human. Like having compassion for other people. The ability to fall in love, the ability to appreciate beauty.”

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.”

Researchers at MIT and elsewhere have found a “unique atomic-level interaction that shields collagen from the damaging effects of water molecules,” reports Mrigakshi Dixit for Interesting Engineering. “Proteins deteriorate when the peptide bonds that link the component amino acids are attacked by water molecules, which results in the cleavage of the peptide bonds,” explains Prof. Ronald Raines. “We discovered a chemical interaction in collagen that protects its peptide bonds from attack and cleavage.” 

MIT scientists studying parrots have discovered higher intelligence than previously thought, with some birds besting five-year-old children at logic games. With a tablet computer, parrots “have even figured out how to communicate using modern video conferencing technology,” writes Mack DeGeurin for Popular Science. When shown pictures of other parrots they had previously chatted with, “the parrots repeatedly requested to chat with their long-distance friends.”

Graduate student Jaida Elcock speaks with WBUR reporter Katie Cole to address misconceptions about sharks. "I think that honestly, one of the biggest dangers to humans is humans not understanding what different wildlife is and feeling free enough to touch it," says Elcock. "There's a lot of stuff in the ocean that's venomous or spiny or whatever the case may be. So, if you see it, that's awesome, you take a picture from a safe distance."

On NPR’s Short Wave, climate correspondent Lauren Sommer reports on MIT researchers using artificial intelligence to decode the secret language of sperm whales. Prof. Daniela Rus says, “it really turned out that sperm whale communication was indeed not random or simplistic but rather structured in a very complex, combinatorial manner.”

Researchers from MIT and elsewhere have used quantitative and computational methods to analyze animal communication, reports Emily Anthes for The New York Times.

MIT researchers have used advancements in machine learning and computing to help decode whale vocalizations, reports Sarah Kuta of Smithsonian Magazine. “If researchers knew what sperm whales were saying, they might be able to come up with more targeted approaches to protecting them,” Kuta explains. “In addition, drawing parallels between whales and humans via language might help engage the broader public in conservation efforts.”

A new analysis of years of vocalizations by sperm whales in the eastern Caribbean has provided a fuller understanding of how whales communicate using codas, reports Will Dunham of Reuters. Graduate student Pratyusha Sharma explained that: "The research shows that the expressivity of sperm whale calls is much larger than previously thought."