ScienceDaily
Scientists discover a universal temperature curve that governs all life
Researchers have identified a universal temperature-performance curve shared across thousands of species, from bacteria to reptiles — performance climbs steadily with heat until it peaks, then collapses rapidly. The pattern holds regardless of a species' preferred temperature range, pointing to a deep biological constraint that transcends evolutionary adaptation. The finding raises serious concerns about whether natural selection can move fast enough to protect species from accelerating climate change.
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Scientists built the hardest AI test ever and the results are surprising
Researchers grew frustrated watching AI models breeze through existing benchmarks, so nearly 1,000 subject-matter experts built Humanity's Last Exam — a 2,500-question gauntlet designed to be unsolvable by any current AI system. Every question that today's models could answer was deliberately cut, leaving only the most demanding problems across dozens of specialized fields. The results confirm what many suspected: even the most advanced AI systems fall well short of genuine expert-level reasoning, exposing a performance gap the industry can no longer paper over with selectively chosen benchmarks.
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A “mirror” molecule can starve cancer cells without harming healthy cells
Researchers have identified D-cysteine, a mirror-image amino acid, as a potent and selective weapon against certain cancers — one that starves tumor cells of energy while leaving healthy tissue intact. The molecule exploits a transporter found predominantly on cancer cell surfaces, smuggling itself inside before disabling a mitochondrial enzyme critical to energy production and DNA maintenance. If the approach translates to clinical use, it could represent a meaningful departure from the broad toxicity that defines most conventional cancer treatments.
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Severe COVID or flu may raise lung cancer risk years later
Hospitalization-level COVID-19 or flu infections may do more damage than previously understood, with new research linking severe respiratory illness to elevated lung cancer risk years down the line. Scientists found that serious viral infections can reprogram immune cells in the lungs, creating chronic inflammation that provides fertile ground for tumor development. Notably, vaccination appears to block the harmful lung changes, adding another measurable benefit to existing immunization rationale.
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