Revolutionary visible-light-antenna ligand enhances samarium-catalyzed reactions Divalent samarium compounds are important reagents for reductive transformations in organic chemistry. However, currently, a high amount of this reagent is required in most reactions, and it also necessitates the use of harmful chemicals. To address this issue, researchers have developed a visible-light-antenna ligand that coordinates with stable trivalent samarium compounds, which, upon exposure to visible light, are reduced to divalent samarium, enabling milder conditions and smaller amounts … Rising 'catchable' cancers: Oncologists in US warn of HPV-linked surge US oncologists are alarmed by the rising cancer cases linked to sexually transmitted diseases like HPV. Although vaccines have proven effective in reducing cervical cancer, their adoption in the US is poor. Increasing public awareness and vaccination efforts could significantly reduce these preventable cancers. Why are so many kids facing anxiety? The pandemic’s lingering effects and chronic screen time make it hard for anxious kids to stay in school, an expert says, but parents can help. |
Prehistoric Earth Was Very Hot. That Offers Clues About Future Earth. At times during the past half-billion years, carbon dioxide warmed our planet more than previously thought, according to a new reconstruction of Earth’s deep past. Harvey Weinstein pleads not guilty to new sex crime charge in New York Harvey Weinstein, while awaiting retrial in his #MeToo case, has pleaded not guilty to a new sex crime charge that accuses him of "forcing oral sex on a woman" in 2006. What you need to know about Earth's new, temporary mini-moon Dubbed the 2024 PT5, the 'mini-moon' will orbit Earth for nearly two months. It comes in a season of lunar phenomena. Rocket Lab to launch 2nd mission for Internet of Things company, Kinéis The mission will be the 53rd launch of an Electron rocket to date. Liftoff is set for Sept. 19 at 11 a.m. NZST (Sept. 18 at 7 p.m. EDT, 2300 UTC). |
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