Science Alert
Catch up on the latest science news, from space and technology to life and environmental research- all the discoveries shaping our world today.
Updated: 2 hours 1 min ago
Why the 5,000-year-old Bristlecone Pine forgot how to age
Ancient Bristlecone Pines in the Great Basin mountains exhibit remarkable longevity, surviving millennia in harsh conditions. These trees, immune to cellular ageing, possess dense, resinous wood and conserve energy through a unique strip-bark design and long-lasting needles. Their rings offer invaluable insights into Earth's climate history, teaching a profound lesson in the power of patience over speed.
In 1844, Horace Wells attended a gas party and found the laughing gas that ended surgical pain
In the mid-1800s, gas parties showcased nitrous oxide's euphoric effects. Dentist Horace Wells observed a man injured but pain-free under its influence, sparking an idea. He tested it on himself, experiencing a painless tooth extraction. Though his public demonstration failed, Wells pioneered pain relief in dentistry and surgery, a legacy still felt today.
In 1903, Edouard Benedictus dropped a flask and found safety glass, saving millions of drivers from shards
A simple lab accident in 1903 led to a major safety breakthrough. French chemist Edouard Benedictus discovered how a special liquid kept a broken flask intact. This led to the invention of laminated glass. Initially expensive, it later became crucial for gas masks and then car windshields. This innovation significantly reduced severe injuries from flying glass in vehicles.
In 1748, a search for water led to the uncovering of Pompeii, a city frozen in time for 1,700 years
An accidental discovery in 1748 unearthed Pompeii, a Roman city preserved by volcanic ash. This find revolutionized archaeology, revealing intact streets and homes. The eruption preserved the city, offering a unique glimpse into ancient Roman urban life and its people. The excavation sparked a cultural shift, influencing art and design across Europe.
A biscuit tin secret comes to light as a former thief returns medieval tiles after sixty years
A man in England returned medieval floor tiles he took as a child over sixty years ago, stored in a biscuit tin. His act of repentance, driven by persistent guilt, has provided English Heritage with well-preserved artefacts, offering new insights into the history of Wenlock Priory and the Cluniac Order.
In 1947, a shepherd boy threw a rock into a desert cave and unearthed the scrolls that rewrote history
A shepherd boy's lost goat led to a monumental discovery in 1947. He found ancient pottery in a cave near Qumran. Inside, he discovered the Dead Sea Scrolls, a hidden library. These scrolls offer a unique window into ancient Jewish life and the Bible's history. Their preservation is a testament to nature and human effort.
Once-in-170,000-year comet is streaking across the sky with glowing blue-green light: Spot it over Australia and New Zealand
A rare long-period comet, C/2025 R3 (PanSTARRS), is currently visible in southern skies for a limited time. Originating from the Oort Cloud, this ancient remnant is now moving away from the Sun, causing its brightness to decline. Observers in New Zealand, Australia, and South Africa have a brief window to view its blue-green glow with binoculars or telescopes.
Meet Janaki Ammal: The scientist whose research powers India’s sugarcane revolution and ethanol growth
Dr. E. K. Janaki Ammal's pioneering work in plant genetics significantly boosted India's sugarcane production. By developing hybrid varieties suited to local climates, she enabled higher sugar yields, transforming the sector. Her research laid the groundwork for India's current status as a major sugar producer and a key player in ethanol production, contributing to energy security.
Mexico City Subsidence Study: NISAR maps rapid sinking over 2 cm a month; data warn of global groundwater risk
Mexico City is sinking. New satellite technology from NASA is precisely measuring how much the city is sinking each month. This subsidence is caused by groundwater depletion. The problem has been known for a long time. The new data will help scientists understand the issue better and plan for the future. This is a global problem affecting many cities.
Backyard Ant-Wasp Discovery: 8-year-old spots oak galls with ants; study reveals seed-like chemical lure
A young boy's backyard discovery revealed a surprising connection. Wasps trick ants into moving oak galls, similar to how ants move seeds. This happens because galls have a special part that smells like seeds to ants. This clever adaptation helps protect wasp larvae. The finding highlights nature's hidden systems and the value of curiosity.
Ontario Spearhead Discovery: Farm family uncovers 12,500-year-old fluted point; hints at Paleoindian hunters
A routine farm cleanup in Ontario unearthed a remarkable 12,500-year-old fluted spearhead, a testament to early human ingenuity. This discovery offers a rare glimpse into the Paleoindian era, revealing sophisticated tool-making skills and the presence of ancient hunters adapting to a post-Ice Age landscape. The fragment, though partial, provides crucial archaeological insights.
Yawning Shifts Brain Fluids: MRI study finds CSF and blood flows change; hints at brain homeostasis
New research reveals yawning does more than signal tiredness. Scientists observed that yawning causes cerebrospinal fluid to move away from the brain. It also increases blood flow into the brain. This suggests yawning plays a role in brain pressure and circulation balance. Each person's yawn pattern is unique, like a fingerprint.
