Reference Terms
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Growth ring
Growth rings (or "tree rings" or "annular rings") can be seen in a horizontal cross section cut through the trunk of a tree. Visible rings result from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree.
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Plants & Animals News
July 8, 2026
July 7, 2026 Bumblebees are picking up dramatically more toxic heavy metals than honeybees, even when both species forage in the same places. Researchers warn that this hidden pollution could quietly reduce their ability to find food, reproduce, and keep ...
July 6, 2026 Scientists have finally solved a nearly 30-year-old mystery surrounding two unusual molecules found in rye pollen that once showed an intriguing ability to help animals fight tumors. By determining ...
July 6, 2026 Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...
July 6, 2026 Researchers discovered that artificial streetlights can trap thousands of woodlice in mesmerizing circular "death spirals" never before seen in the wild. The surprising finding suggests that light ...
June 30, 2026 Researchers have uncovered an unexpected antiviral defense system in sea anemones that works very differently from the one humans use. The discovery suggests evolution developed multiple ways to combat viruses, challenging long-held ideas about how ...
June 28, 2026 Researchers have discovered that beneficial soil bacteria give plants an unexpected survival advantage in salty soils. Instead of helping plants keep salt out, the microbes stimulate the production of lignin, a natural compound that strengthens ...
June 27, 2026 A surprising ecological makeover unfolded when mountain lions began frequenting a small preserve south of San Francisco. Deer activity dropped, plants recovered, and shifts among predators like coyotes, bobcats, and foxes followed. The study shows ...
June 26, 2026 A new study reveals that goldfish can do far more than survive in the wild—they can fundamentally reshape freshwater ecosystems. Researchers found they cloud water, damage food webs, and hurt native fish populations, sometimes triggering major ...
June 26, 2026 The capture of a juvenile great white shark in Spain has provided fresh evidence that the Mediterranean's elusive "ghost" population of great whites still survives. Researchers reviewing 160 years of ...
June 25, 2026 A giant black coral estimated to be 300–400 years old has been discovered deep in Fiordland, New Zealand, astonishing researchers with its enormous size—about 4 meters tall and 4.5 meters wide. ...
June 24, 2026 A hidden population of South African leopards has revealed a remarkable evolutionary story. Researchers analyzing entire leopard genomes discovered that the Cape Floristic Region’s leopards are not only much smaller than most African leopards, but ...
June 23, 2026 Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a single amino-acid difference affects whether the immune ...
Latest Headlines
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July 7, 2026 Researchers rebuilt long-extinct versions of a crucial enzyme that helps make nitrogen available to life, offering an unprecedented glimpse into ...
July 7, 2026 A new study suggests human hair grows in a way scientists never expected. Researchers found that hair is pulled upward by coordinated cell movements inside the follicle rather than simply being ...
July 5, 2026 Scientists discovered ancient wolves on a tiny Baltic island where they could only have been brought by humans, suggesting an unexpectedly close ...
July 5, 2026 A stunning fossil discovery shows that ancient bees used the empty tooth sockets of mammal bones as tiny nests after owls scattered the bones across a cave floor 20,000 years ago. It's the first ...
July 2, 2026 Bumble bees astonished researchers by inventing a new way to reach a hidden reward, despite never being taught the trick. The discovery adds to growing evidence that these tiny insects are far ...
July 2, 2026 Ancient asteroid impacts may have done more than reshape Earth's surface—they could have helped spark life itself. New computer models show the collisions created enormous underground hydrothermal ...
July 1, 2026 The rhythm of human laughter appears to have deep evolutionary roots shared with chimpanzees, bonobos, gorillas, and orangutans. That ancient pattern may offer one of the clearest clues yet to how ...
July 1, 2026 A team of researchers recreated a life-size oviraptor nest to investigate how these bird-like dinosaurs incubated their eggs millions of years ago. ...
June 30, 2026 Tiny, tooth-sized fossils have just reshaped the story of our deepest ancestry. Paleontologists have discovered the southernmost remains ever found of Purgatorius—the earliest-known relative of all ...
June 30, 2026 A tiny new species of ladybird beetle was discovered on a pine tree at Kyushu University, proving that unknown wildlife can exist right under our noses. The research also uncovered a second new ...