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When you heat things, they expand. It’s why hot air rises and bridges sometimes buckle on very hot days. There’s an exception – crucial for much of life on Earth – for water at temperatures close to freezing, but otherwise, the pattern is close to universal. In 1895, Charles-Edouard Guillaume discovered a mixture of iron […]

A grim video shows the meticulous and deadly way orcas are attacking the largest fish in the ocean as a pod descend on a whale shark and suck out its liver. It’s not a pleasant watch but it is a fascinating and rare one, demonstrating the way in which orcas have learned to target large […]

In October 2020, NASA’s OSIRIS-REx flew down to the surface of asteroid Bennu to collect a sample of material. The spacecraft is on its way back to Earth now and it will drop the precious cargo on September 24. Bennu is the most dangerous known asteroid with a very small chance of hitting Earth in […]

Perovskite-based light emitting diodes (LEDs) could be the key to developing internet bandwidths orders of magnitude faster than what is now available, while also keeping energy consumption and cost down, researchers have claimed. Other potential applications lie in laser technology. Perovskite is a natural mineral first identified in Russia’s Ural Mountains in 1839 and composed […]

A man with quadriplegia has had partial movement and sensation restored to his hands and wrists following a first-of-its-kind clinical trial that implanted microchips into his brain. The brain implant forms an electronic bridge that uses artificial intelligence (AI) algorithms to translate thoughts into actions, reconnecting the pathway between his brain and body that was […]

Giraffes mostly sleep standing up as a defence mechanism against predators, keeping them relatively safe as they sneak in a short nap. However, this isn’t possible during certain sleep stages, and the positions giraffes adopt to cope with their extraordinarily long necks are, quite frankly, hilarious. Giraffes are enormous animals topping heights of 4.8 to […]

An “astounding” and “unexpected” array of giant virus-like particles have been found lingering in the soil of Harvard Forest, Massachusetts. Not only are they abnormally large, but they’re also pretty weird, with “previously unimaginable” structures that throw into question everything we know about giant viruses and viral diversity. “The cornucopia of viral morphotypes found in […]

Washing your clothes is a pretty mundane chore, but it can be easily accomplished on Earth using detergent and a washing machine. And while hanging your clothes outside to dry can result in the best smells, keeping your space suit clean 384,400 kilometers (238,855 miles) away from the nearest washing machine – or even water […]

Surgically attaching the circulatory systems of old mice and new mice – a process called heterochronic parabiosis – seems to turn back the biological age of the older mouse. This research could be beneficial in analyzing the restorative effects of young blood in older individuals. Previous studies on mouse parabiosis have shown that it comes […]

Issue 13 (August 2023) of CURIOUS is out now, bringing you science highlights for the month plus deep dives into intriguing topics, interviews, exclusives, diary dates, and explanations for some of Earth’s most perplexing natural phenomena and landscapes. In This Issue… Advertisement OUR COVER STORY: Is Logic Flawed? Paradoxes have long posed a problem for […]

An ancient worm has wriggled back to life after 46,000 years frozen in Siberian permafrost. The tiny animals, called nematodes, were revived from a lengthy slumber, which began in the late Pleistocene some 45,839 to 47,769 years ago, radiocarbon analysis has revealed. That’s quite the catnap. As well as being impressively hardy, the microscopic critters […]

Exercise is good for your overall health and your heart in particular. Guidelines recommend that we should be doing 150 minutes of moderate-to-vigorous activity a week. But does it matter when you do this exercise? Should you spread it out in the week or does it lose some of the benefit if you cram it […]

In 1974, farmers stumbled across one of the most important archaeological discoveries of all time in an unassuming field in the Shaanxi province of China. While digging, they found fragments of a human figure made out of clay. This was just the tip of the iceberg. Archaeological excavations revealed the field was sitting above a […]

About 400,000 years ago, large parts of Greenland were ice-free. Scrubby tundra basked in the Sun’s rays on the island’s northwest highlands. Evidence suggests that a forest of spruce trees, buzzing with insects, covered the southern part of Greenland. Global sea level was much higher then, between 20 and 40 feet above today’s levels. Around […]

You may have seen a lot of talk about a “gravity hole” in the Indian Ocean. It’s an easier-to-remember name for what scientists call the Indian Ocean Geoid Low (IOGL), and it’s a gravity anomaly that’s been puzzling scientists for a long time. The Earth isn’t smooth. Just look at plunging depths like the Mariana […]

Humanity’s first cities and empires rose and fell in a region cradled between the River Tigris and River Euphrates: Mesopotamia. During the first echelons of recorded history, this ancient land was the birthplace of the Sumerians, the Babylonians, and the Assyrians. Cities thrived, and eventually gave rise to writing, mathematics, astronomy, and stunning artistic developments. […]

Temperatures around the world are soaring. Both California’s Death Valley and China’s Xinjiang region have seen temperatures climb above the 50°C mark. A blistering heatwave is also sweeping across the Mediterranean, causing temperatures in parts of Italy, Spain, France, and Greece to exceed 40°C. In the future, the impact of scorching temperatures will extend beyond […]

The history of medicine is full of dubious claims and outlandish ideas. We have all heard of quack practitioners who claim medical expertise in order to promote and sell nonsense treatments and nostrums. These individuals experience various levels of success, but usually, their bogus claims are discovered before too long. But what about instances where […]

Have you ever wondered how ancient people made maps before the invention of air travel and satellites? Ancient mapmakers from across the world relied on a mix of artistry, exploration, mathematical ingenuity, and a heap of imagination to capture the vastness of the lands they knew and many of the ones they believed were out […]

An unidentified arachnid fossil was retrieved from the Late Carboniferous (Moscovian) strata of strata of Piesberg near Osnabrück in Lower Saxony, Germany, a few years ago. The mysterious specimen was passed on to fossil arachnid expert Dr Jason Dunlop of the Museum für Naturkunde in Berlin, who in a recent study has revealed its astonishing […]