Researchers have recently reported a series of discoveries that have expanded scientific understanding across several fields. These findings, documented over the past two years, range from deep-sea observations to genetic analyses and astronomical measurements.
In March 2025, a remotely operated vehicle from the Schmidt Ocean Institute filmed a juvenile colossal squid near the South Sandwich Islands at a depth of 600 meters. The squid, with a mantle length of 30 centimeters, was transparent, allowing observers to see its internal organs. Colossal squid had previously been known only from fragments found in whale stomachs or fishing nets. The filmed specimen was alive and moving in its natural environment. Its identification was confirmed by comparing its arm hooks and beak shape with museum specimens. The footage provided information about the species’ behavior and camouflage techniques. Adult colossal squid can reach seven meters and weigh up to half a ton, making them the heaviest invertebrates on Earth. Filming this juvenile required advanced remotely operated vehicle technology with high dynamic range cameras and quiet thrusters.
Seismic imaging has revealed an ancient slab of oceanic crust stalled deep beneath the East Pacific Rise near Easter Island. The slab sits between 410 and 660 kilometers below the surface. It is colder and denser than the surrounding mantle and stretches more than a thousand kilometers across. The slab is sinking at half a centimeter per year, about half the expected speed, due to a viscous barrier in the mantle transition zone. This ancient crust, preserved for hundreds of millions of years, may help explain why the East Pacific Rise spreads so rapidly.
Artificial intelligence has identified 303 new geoglyphs in the Nazca desert of southern Peru. The AI model, trained on decades of archaeological records and aerial images, completed the work in six months during 2024. This nearly doubled the known number of geoglyphs from about 430 to 733. The AI processed imagery about 21 times faster than human experts. The new figures fall into two categories. Relief-type geoglyphs, which are smaller and often depict humans or domesticated animals, appear within 43 meters of ancient trails. Larger line-type figures, mostly wild animals, appear about 34 meters from networks of lines and trapezoids. Archaeologists confirmed the AI’s findings on the ground.
Archaeologists have uncovered an ancient network of Maya sites in Guatemala’s Petén region. The sites of Los Alos, Petnal, and Cambrial are located about 13 miles from Waktun. Radiocarbon dating and ceramic analysis place these structures among the earliest urban centers in the Maya world. The sites include ritual centers, palaces, stone-lined canals, and sculpted figures believed to represent an ancestral couple. The hydraulic engineering at the sites predates the classic Maya era.
Radio telescopes have mapped several large, faint circular structures in the sky. Known as odd radio circles, these objects show nearly perfect symmetry. Some contain entire galaxies at their centers, while others surround dying stars. Possible explanations include supernova remnants, winds from Wolf-Rayet stars, or the merger of supermassive black holes. No single explanation accounts for all of them.
A persistent radio signal first detected a decade ago has been traced to its source. The signal, known as ILTJ 1101 + 5521, repeats every 125.5 minutes and comes from 1,600 light-years away in the direction of the Big Dipper. It originates from a binary system containing a dead white dwarf and a red dwarf. As the two stars orbit, their magnetic fields interact and produce radio bursts through a process similar to auroras on Jupiter. This is the first long-period repeating radio transient traced to anything other than a neutron star.
A fossil skull known as Yunian 2 was found on the banks of China’s Han River. Researchers used CT scanning and 3D imaging to reconstruct the crushed cranium. The digital model produced an endocranial volume of about 1,143 milliliters, larger than most classic Homo erectus specimens. The skull combines primitive features, such as thick brow ridges, with characteristics more common in later human species. Geological layers and fossilized animal remains date the skull to between 940,000 and 1.1 million years old. Researchers compared the virtual model to over 100 fossil crania. The findings suggest the skull belongs to an early branch of Homo longi, a lineage that may have contributed to modern human ancestry. Some experts disagree with this classification, seeing instead echoes of classic Homo erectus.
Geneticists at Cambridge University have developed an algorithm called Cobra to analyze modern human DNA. The model searches for signs of ancient population events in the 1,000 Genomes Project dataset. Cobra found that all modern humans descend from two ancestral populations that diverged about 1.5 million years ago. These populations lived separately for over a million years before merging around 300,000 years ago. One population, labeled population B, contributed roughly 20% of the genetic material in modern humans. The other, population A, experienced a severe bottleneck before recovering and contributing the remaining 80%. The results were validated against simulated data. The model suggests that human evolution involved repeated population splits and reconnections rather than a simple branching tree.
Another study at Cambridge examined more than 10,000 genomes from different continents and time periods. The researchers used algorithms to trace how populations moved, mixed, and separated over time. The data showed repeated gene flow between populations once thought to have lived in isolation. Some exchanges were subtle, while others reshaped entire groups. The findings support a view of human prehistory as a network of connected peoples rather than isolated communities.
Astronomers using the MeerKAT radio telescope in South Africa have measured a compact object with a mass of 2.5 times that of the Sun. The object orbits a pulsar 40,000 light-years from Earth. Its mass places it in the so-called mass gap between the heaviest known neutron stars, which reach about 2.3 solar masses, and the lightest confirmed black holes, which start at about five solar masses. The measurement was made by tracking the pulsar’s orbit over hundreds of days and has an uncertainty of less than 10%. If the object is a neutron star, it is heavier than any previously confirmed, which would challenge current descriptions of matter at extreme densities. If it is a black hole, it is the lightest ever seen. No electromagnetic signature or gravitational wave has yet provided a final answer about its nature.
