Explore

WTW Warns of Growing Supply Concentration Risk in Lithium Triangle, Urges Preemptive Risk Management

WTW Warns of Growing Supply Concentration Risk in Lithium Triangle, Urges Preemptive Risk Management

WTW Warns of Growing Supply Concentration Risk in Lithium Triangle, Urges Preemptive Risk Management

A decade later, Rio's Olympic Golf Course might house the world's most important 18 holes

A decade later, Rio's Olympic Golf Course might house the world's most important 18 holes

Can the Rio course become the spark for a lasting golf culture in a country where the sport has traditionally occupied only a small corner of the athletic landscape?

Buddleja alternifolia Exhibits Extensive CCD4 Gene Expansion and Diversification for Crocetin Biosynthesis

Buddleja alternifolia Exhibits Extensive CCD4 Gene Expansion and Diversification for Crocetin Biosynthesis

A recent study has revealed that the plant *Buddleja alternifolia* possesses a significantly expanded family of Carotenoid Cleavage Dioxygenase 4 (CCD4) enzymes, with 12 identified members, making it one of the largest CCD4 subgroups in the Lamiales order. This expansion is primarily driven by recent tandem duplication events, particularly on chromosome 10, with evidence of ongoing birth-and-death evolution, including the presence of pseudogenes. The research, which involved genomic, phylogenetic, transcriptional, structural analyses, and functional characterization of 11 *BaCCD4* paralogs, demonstrated extensive biochemical diversification among these enzymes. While some paralogs showed no detectable activity or produced asymmetric carotenoid cleavage products like citraurin, two specific enzymes, KAG8367281 and KAG8375220, were identified as capable of cleaving zeaxanthin to generate crocetin dialdehyde, a direct precursor of crocetin and crocins. These crocetin-producing enzymes belong to closely relate...

3D X-ray imaging unlocks the secrets of the narwhal's spiral tusk

3D X-ray imaging unlocks the secrets of the narwhal's spiral tusk

By Will Dunham Aug 20 (Reuters) - In the Middle Ages, narwhal tusks were sold as unicorn horns blessed with magical powers such as neutralizing poisons and curing diseases — prized possessions of monarchs and nobles worth more than their weight in gold.

Tiger Shark Movements Reveal Transatlantic Connections, Highlighting Conservation Challenges

Tiger Shark Movements Reveal Transatlantic Connections, Highlighting Conservation Challenges

Researchers have tracked tiger sharks, revealing extensive movements across ocean basins, including a documented round-trip trans-Atlantic journey by one female shark covering nearly 11,185 miles (18,000 kilometers). This marks the second-longest movement ever recorded for a tiger shark and the first documented round-trip trans-Atlantic journey for the species. The study, conducted off the coast of Cabo Verde, aimed to understand tiger shark habitat use and survival. While some individuals remained in Cabo Verdean waters, others, like the trans-Atlantic traveler, ventured far, potentially driven by feeding opportunities, mating behavior, or shifts in prey availability. This individual variation in behavior, even within the same species, is increasingly recognized as a key factor in how animals interact with their environment. The findings complicate the understanding of large shark populations and their conservation needs.

How Food Shapes the Way Animals Live and Behave

How Food Shapes the Way Animals Live and Behave

Nutrition is a cornerstone of animal existence, dictating not only their physical health but also profoundly influencing their behaviors, life cycl...

Australian Councils Seek Federal Aid Amid Escalating H5N1 Bird Flu Outbreak

Australian Councils Seek Federal Aid Amid Escalating H5N1 Bird Flu Outbreak

Australian councils are appealing for increased funding and support from federal and state governments to manage the escalating H5N1 bird flu outbreak. The virus has led to mass mortality events, with over 1,000 birds dying at three sites in South Australia and 28 little penguins reported dead on Tasmania's King Island. Public distress is growing as the H5 bird flu reaches suburban areas, with reports of suffering birds and residents taking it upon themselves to clean up carcasses. The Australian Local Government Association (ALGA) emphasizes that mass carcass removal during a disease event is beyond ordinary council waste management and that councils cannot absorb these unforeseen costs from their already stretched budgets. They are calling for clear protocols on when to act, what constitutes a mass mortality event, proper handling and disposal of carcasses, and who will cover the expenses. Professor Euan Ritchie of Deakin University and the Biodiversity Council criticizes the current government approach,...

Scientists Identify Diverse Evolutionary Paths for Embryonic Symmetry Breaking in Flies

Scientists Identify Diverse Evolutionary Paths for Embryonic Symmetry Breaking in Flies

Researchers at the University of Chicago have discovered that different fly species utilize diverse genetic mechanisms to establish the anterior-posterior body axis during embryonic development. While the common fruit fly (Drosophila melanogaster) uses a gene called bicoid for this process, other fly species employ unrelated genes, such as odd-paired in the moth fly (Clogmia albipunctata), to achieve the same outcome. This phenomenon, termed developmental systems drift, highlights how developmental gene networks can diverge significantly while preserving the final developmental result. The study, published in PLOS Biology, investigated the molecular function of the odd-paired gene in moth flies, finding that it establishes the head-to-tail axis by affecting chromatin accessibility, similar to bicoid, but targets different downstream genes like homeobrain and sloppy-paired instead of hunchback. This research expands the understanding of evolutionary flexibility in fundamental biological processes.

Trinidad and Tobago's Ice Age Fossils Reveal Prehistoric Past, U.S. Institutions House Key Specimens

Trinidad and Tobago's Ice Age Fossils Reveal Prehistoric Past, U.S. Institutions House Key Specimens

Trinidad and Tobago's Ice Age fossils, largely discovered during oil exploration between the 1920s and 1980s, are providing a unique window into the islands' prehistoric past. These specimens, dating back to the Pleistocene epoch (2.5 million to 10,000 years ago), include vertebrate, invertebrate, and plant material, offering insights into life before human arrival. Dr. Ryan Mohammed, a biologist at The University of the West Indies (UWI) and a council member of the National Trust of Trinidad and Tobago (NTTT), emphasizes the importance of these fossils for understanding ancient environments and assessing current climate data. Notably, several key historical finds, such as a giant armadillo carapace and skull discovered by Apex Oil Company in the 1920s, are currently housed in the United States. Other specimens were collected by Elizabeth Wing in the 1960s for the Florida Museum of Natural History.

Vampire Bats Exhibit Reciprocal Altruism, Remembering Past Favors in Blood Sharing

Vampire Bats Exhibit Reciprocal Altruism, Remembering Past Favors in Blood Sharing

Vampire bats demonstrate a sophisticated system of reciprocal altruism, where they regurgitate blood to feed starving roost-mates, even those they are not related to, and remember who has helped them in the past. This behavior, studied over four decades by researchers like Gerald Wilkinson and Gerald Carter, challenges the notion that such generosity is solely driven by kinship. A 2013 study in Proceedings of the Royal Society B found that blood previously received from a partner was 8.5 times more predictive of future donations than genetic relatedness, with 64% of sharing pairs being unrelated. Vampire bats have a fragile energy budget, as blood is watery and provides little stored energy, making two consecutive nights without feeding potentially fatal. This vulnerability makes blood sharing a critical survival mechanism. Researchers have observed that bats initiate sharing more often than hungry bats solicit it, and they build trust by starting with low-risk investments like grooming before escalating t...

Archaeologists uncover ancient skeletal remains at Huaca Pucllana in Lima

Archaeologists uncover ancient skeletal remains at Huaca Pucllana in Lima

Archaeologists in Peru have unveiled skeletal remains near Huaca Pucllana, an ancient pyramid in Lima

WTW and Peterson Institute for International Economics Warn of Growing Lithium Supply Concentration Risk in South America

WTW and Peterson Institute for International Economics Warn of Growing Lithium Supply Concentration Risk in South America

WTW and Peterson Institute for International Economics Warn of Growing Lithium Supply Concentration Risk in South America