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Frog or synthetic? Experts question origins of toxin ‘linked’ to Alexei Navalny’s death in Russia

Russian opposition leader Alexei Navalny (File photo)

Experts believe the deadly toxin that allegedly killed Russian dissident Alexei Navalny in February 2024 was likely created in a lab rather than extracted from wild South American poison dart frogs, as claimed by multiple European nations. Five European countrieslast week said tests confirmed that Navalny was poisoned with epibatidine, a powerful toxin found in the skin of poison dart frogs native to South America, accusing the Russian state of responsibility.While these frogs can be easily purchased in South American markets or legally exported with permits, scientists say making a deadly poison from actual frogs would be impractical. Ivan Lozano, director of Tesoros de Colombia, explained that it would take “an enormous number of frogs” to create a lethal dose for humans, making it virtually impossible to gather enough for this purpose.The toxicity of these frogs presents another challenge. According to University of Illinois re..

‘Can a neighbor hear a gunshot?’: Chilling forensic details emerge in murders of two Bangladeshi students in US

The alleged murder case of two Bangladeshi students in the US took a grisly turn after Nahida Sultana Bristy's body was found and the investigators gave minute details of how they cracked the case of the mysterious disappearance of two students from the campus of the University of South Florida. Bristy's body was found days after her friend Zamil Ahmed Limon's body was recovered. The investigation is going on as the bodies have been sent to Bangladesh for the last rites.Forensic technique revealed hidden blood stainHillsborough County Sheriff Chad Chronister called it a monstrous crime as Hisham Saleh Abugharbieh, the accused, who was a roommate of Limon, planned the murders, executed them, and then removed all traces.Limon's body was found stuffed inside a trash bag left on the shoulder of the Howard Frankland Bridge. Election Results 2026Vijay’s TVK party emerges as formidable force in Tamil Nadu; all you need to know about its journeyWest Bengal election results:..

Scientists in China create a predator-like material to hunt for uranium in the ocean

AdvertisementScienceChinaScienceScientists in China create a predator-like material to hunt for uranium in the oceanBreakthrough could aid radioactive pollution clean-ups and allow for uranium ion extraction from seawater to power nuclear reactors
2-MIN READ2-MIN ListenChao Kongin BeijingPublished: 10:00pm, 26 Apr 2026An international research team in China has developed a microscopic “predator-like” material capable of swimming through water and hunting uranium ions, a breakthrough that could open new possibilities for nuclear fuel extraction and cleaning up radioactive pollution.The light-powered material, a metal-organic framework (MOF) micromotor created by researchers at the Chinese Academy of Sciences’ Qinghai Institute of Salt Lakes, can autonomously move through water while capturing uranium ions. The work was accepted on March 24 by the peer-reviewed journal Nano Research.Uranium is the fuel that powers nuclear reactors. Although seawater contains an estimated 4.5 billion tonn..