Why ancient cities are often found buried beneath the modern cities built above them

Throughout history, ancient cities were frequently reconstructed at the same sites due to their inherent strategic benefits. Such locations provided essential resources like water, access to trade routes, and fertile land, which were valued across generations. As populations expanded, they built upon the existing infrastructure, resulting in the formation of layered urban landscapes. This progression naturally elevated ground levels over centuries, causing ancient remnants to lie beneath contemp

A new extinct spadefoot toad species, Spea labreae, was identified from ancient fossils. Dr. Alberto Cruz discovered the unusual bone while studying collections at La Brea Tar Pits. This finding adds to the limited fossil record of Ice Age amphibians in North America. The toad's presence offers new insights into ancient Los Angeles' environmental history. Researchers also found evidence of a Mexican burrowing toad in the same region.

In a remarkable display of emotion, elephants often demonstrate a keen interest in the remains of their own kind, revisiting and examining skeletal structures with their trunks. Studies reveal that this behavior occurs even when the carcasses are not fresh, leading researchers to ponder if it signifies a sense of loss or an instinct for knowledge gathering. Nonetheless, the idea of elephant graveyards is considered largely a legend.

In an inspiring initiative, Chilean researchers are designing specialized vests for injured penguins, incorporating copper and zinc to expedite healing. This groundbreaking effort is focused on supporting the struggling Humboldt penguin population by preventing further injury while enhancing recovery. The vests draw on effective treatments that have proven successful for domestic animals, showcasing a creative blend of technology and compassion.

Conservationists undertook a significant effort to remove feral sheep from Santa Cruz Island, aiming to revive its delicate ecosystem. Over seven years, thousands of these sheep were eliminated, risking the extinction of a unique heritage breed. To counter this, twelve lambs were rescued to spearhead a captive breeding initiative on the mainland, ensuring the preservation of a rare genetic lineage and honoring California's rich agricultural heritage.

Archaeologists have unearthed the skeletal remains of a man tucked inside a massive Roman storage jar, offering a chilling glimpse into the past. It appears he sought refuge from a violent raid, as evidenced by the surrounding destruction and signs of fire. Two iron knives discovered alongside him imply a desperate act of self-defense. This city's fate remained enigmatic for an astonishing sixteen centuries before it was eventually rebuilt.

Scientists led by the University of Vienna have found hidden populations within common gut bacteria, some of which are linked to ageing, colorectal cancer, inflammatory bowel disease and type 2 diabetes. The study also found evidence that certain bacterial populations can spread between people and across continents within a few decades, suggesting the gut microbiome may be more transmissible and dynamic than previously thought.

In 2019, a severe typhoon struck Japan's largest floating solar farm, leaving it heavily damaged. This event highlighted the engineering flaws present in floating solar structures when confronted with extreme weather. Investigators identified anchor failures as the main factor contributing to the significant damage. In response, the project was restructured into smaller, more resilient floating modules. Now, it serves as a reference for enhancing solar technology's storm resilience.

In 2014, the removal of Harvell Dam revitalized over 120 miles of river, providing essential upstream habitats for migratory fish. Observations from state biologists and anglers confirmed fish migrating upstream post-demolition. This collaborative restoration project united various agencies and organizations, successfully restoring the river's free-flowing state and enhancing benefits for both aquatic life and recreational activities.

In a groundbreaking study, researchers have tagged over 14,000 Bogong moths in the Snowy Mountains of Australia. However, after extensive tracking efforts, none have been recaptured, suggesting potential populations larger than previously assumed. Alternatively, these moths might be utilizing undiscovered migration routes. The ongoing project remains crucial for understanding the ecology of these endangered insects.

Recent observations indicate a remarkable uptick in rare threecorner milkvetch plants on a solar project site. The solar panels have positively influenced water distribution, nurturing these desert dwellers. The growth and increased flowering of these plants result from strategic construction techniques and panel arrangement, showcasing how eco-friendly solar initiatives can be integrated with fragile desert environments.

In an innovative approach, Swiss researchers are experimenting with natural wool blankets to mitigate glacier melting. These eco-friendly coverings have shown results comparable to synthetic options during trials. The initiative makes use of discarded sheep's wool, an agricultural byproduct. Although effective in localized regions, it's important to note that this technique alone won't reverse global warming—tackling greenhouse gas emissions is essential for the long-term preservation of g

Over the course of two years, research revealed that floating wetlands successfully diminished methane emissions by sixty-six percent, alongside notable reductions in carbon dioxide and nitrous oxide levels. The native vegetation on these platforms is crucial in nurturing beneficial microbes that tackle pollutants and gases effectively. This eco-friendly treatment method reveals a significant advancement in wastewater management, with ongoing tests on analogous floating wetlands in regional agri

After four years dedicated to rewilding, Broughton Sanctuary has successfully documented over 1,700 species. The estate boasts more than 330,000 trees planted, significantly enhancing forest cover. By managing livestock and beavers, diverse habitats are flourishing. Extensive fencing removal has further facilitated wildlife movement. Going forward, plans include reintroducing native species and expanding vibrant wetland areas for richer biodiversity.

Beavers newly introduced in Dorset have remarkably transformed a woodland area into a flourishing wetland. Through their natural dam-building, these creatures have slowed down water movement, resulting in the formation of deep pools. This ecological shift has rejuvenated the local fauna, reintroducing various native species to the Purbeck region. Additionally, the beaver dams serve to mitigate flooding on nearby roads during heavy rains, highlighting nature’s essential contribution to envi

In a remarkable finding, researchers have identified the largest nursery for octopuses off the Californian coast, aptly termed the 'Octopus Garden.' This incredible site is alive with thousands of pearl octopuses that mate and nest in the warm waters accelerated by nearby hydrothermal vents. Females diligently tend to their eggs until they hatch, giving life in their final moments as their bodies replenish the food chain for other deep-sea creatures.

In Southern California, local fishermen are delighted to encounter a surge of warm-water fish species, an effect of rising ocean temperatures associated with El Niño and marine heatwaves. This change has drawn in fish like yellowtail and bonito, which are often absent from these waters. However, while this provides thrilling fishing options, it’s crucial to remember that previous events like this have resulted in serious environmental repercussions.

A young palaeontology enthusiast found a rare sea-star fossil at a Calgary playground.This ancient specimen is estimated to be between 250 and 400 million years old.The fossil was embedded in a boulder placed at the park during construction years ago.Experts confirmed its significance and rarity due to specific fossilisation conditions required.The fossil was carefully removed for preservation and potential museum display.

Researchers developed a new construction material using waste coffee grounds and oyster shells.Adding oyster shells, in powdered or granular forms, improved the material's strength.GGBS-based alkali-activated materials served as the binder for these waste components.Curing conditions and activator type significantly influenced the mixture's final performance.Durability results were encouraging, showing high resistance to degradation.

The Korean Demilitarised Zone, known for its fortified borders, has unexpectedly emerged as a sanctuary for diverse wildlife. This area has largely evaded the effects of urbanization and agriculture, allowing rare species such as musk deer and leopards to flourish. Additionally, migratory birds have discovered refuge in the zone's wetlands and rice fields, thanks to ongoing conservation initiatives and eco-tourism efforts aimed at safeguarding this remarkable ecosystem.

Research indicates that tiger worms did not decompose Ascaris eggs present in faecal waste during lab trials. The eggs remained intact and capable of survival following prolonged exposure to the worms. A majority of the eggs were discovered within the coir layer of the biodigesters. As a result, the produced vermicompost and effluent must not be deemed safe for farming, necessitating additional testing for products from tiger worm toilets.

Bats often confuse smooth artificial surfaces for water through their echolocation abilities. Researchers discovered that multiple bat species, including those still inexperienced with water, persistently tried to drink from these misleading surfaces. This intriguing behavior underscores the significant role of echolocation in shaping bats' environmental perceptions and suggests that artificial surfaces can emit deceptive acoustic cues that alter their natural behaviour.