Category archives: Weekly Selection

MI weekly selection #522

MI weekly selection #522

Weekly Selection

By César Tomé

Annulated sea snakes do have genes to see colour Annulated sea snakes, a venomous species found in the oceans of Australia and Asia, can see colour, debunking assumptions of colorblindness after surviving the last 110 million years in the ocean. Researchers used genome sequencing to find four intact copies of the opsin gene SWS1 &#8212 […]

MI weekly selection #521

MI weekly selection #521

Weekly Selection

By César Tomé

Earth’s inner core is textured, not smooth The Earth’s solid inner core is textured with ripples in the “fabric” that are more pronounced deeper into the core. Researchers examined seismic data from 2,455 earthquakes and found that the pattern of texture may mean Earth’s core endured a period of rapid growth before slowly hardening. Full […]

MI weekly selection #520

MI weekly selection #520

Weekly Selection

By César Tomé

Study upends idea that men hunted while women gathered The popular belief that early hunter-gatherer societies were organized around sex roles with men hunting and women gathering is incorrect, according to an analysis of data from academic papers focusing on 63 hunter-gatherer societies from across the world. The new research shows that 79% of communities […]

MI weekly selection #519

MI weekly selection #519

Weekly Selection

By César Tomé

Stronger earthquakes after cosmic radiation Cosmic radiation touching the Earth’s surface may lead to stronger earthquakes. Using data from the Cosmic Ray Extremely Distributed Observatory, scientists found a link between cosmic radiation and seismic activity that may be due to disruptions in the flow of matter in Earth’s core and magnetosphere. Full Story: Space Air […]

MI weekly selection #518

MI weekly selection #518

Weekly Selection

By César Tomé

New theory of how Earth formed Scientists have found evidence that the Earth was created from a rapid landslide in less than 5 million years rather than a gradual series of celestial collisions, revising the longstanding theory of how Earth-like planets form in the galaxy. “With this new planet formation mechanism, the chance of having […]

MI weekly selection #517

MI weekly selection #517

Weekly Selection

By César Tomé

Brain changes in astronauts Astronauts on space missions lasting six months or more have enlarged cerebral ventricles in the brain, according to a study of 30 astronauts. Researchers found that most ventricle expansion occurs during the first six months in space, but slows down after a year, and the astronauts’ brains fully recovered after three […]

MI weekly selection #516

MI weekly selection #516

Weekly Selection

By César Tomé

Climate paradox of slashing emissions While cutting greenhouse gas emissions is necessary for reducing global warming in the long term, it may also lead to rapidly rising temperatures in the short term. R esearchers studying the emissions reduction during the pandemic show that while air pollution decreased, a lower concentration of aerosols led to a […]

MI weekly selection #515

MI weekly selection #515

Weekly Selection

By César Tomé

Volcanoes, meteorites may be tied to life’s start Meteorites and volcanoes could have produced iron particles that served as a catalyst for creating life forms on Earth. Scientists conducted experiments using metallic particles from meteorites and ash from Sicily’s Mount Etna to see how iron may have helped convert carbon dioxide and hydrogen into hydrocarbons […]

MI weekly selection #514

MI weekly selection #514

Weekly Selection

By César Tomé

Simulated accretion disks may explain black hole growth Researchers using the Mega Ampere Generator for Plasma Implosion Experiments produced spinning columns that mimicked artificial accretion disks by accelerating and then colliding plasma jets. One of the research team’s primary goals is to understand how black holes are able to grow when accretion disks’ orbits stay […]

MI weekly selection #513

MI weekly selection #513

Weekly Selection

By César Tomé

Human pangenome captures genetic diversity A draft human pangenome published in Nature aggregates the genomic sequences of 47 people from Africa, the Americas, Asia and Europe and captures more genetic variation than previous reference genomes have. The researchers computationally aligned the sequences to form a map with branching paths that indicate genetic variation, and the […]