ScienceDaily
NASA's James Webb Space Telescope reveals a strange atmosphere on a hellish lava planet
The James Webb Space Telescope has uncovered compelling evidence that 55 Cancri e — a scorching lava world where rock melts at the surface — hosts a hydrogen-rich atmosphere driven by gases seeping from its molten interior. Volcanic outgassing may even generate transient clouds above this extreme environment. The findings push the boundaries of what scientists thought possible for rocky planet atmospheres, with implications for understanding the early conditions of Earth and similar worlds.
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Scientists finally solved how a common gut bacterium triggers colon cancer
Researchers have cracked the mechanism by which a bacterial toxin linked to colorectal cancer breaches the colon's protective lining, finding that it exploits a receptor called claudin-4 as its entry point. Armed with that knowledge, the team engineered a decoy protein that successfully neutralized the toxin in mice. The breakthrough opens a concrete path toward therapies that could prevent the inflammation and tumor development the toxin triggers.
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Common constipation drug may help clear depression brain fog
Prucalopride, a drug typically used to treat constipation, may double as a cognitive booster for people recovering from depression. In a small clinical trial, participants who took the drug for roughly a week outperformed placebo recipients on tests of memory, attention, and processing speed. The finding hinges on the drug's ability to target a serotonin receptor active in both the gut and the brain, offering a potentially safe new avenue to address one of depression's most persistent and debilitating symptoms.
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Rare mutations are helping dangerous hospital bacteria slip past the last-line antibiotic defense
Pseudomonas aeruginosa, a deadly hospital-acquired pathogen, is developing rare mutations that allow it to resist ceftazidime-avibactam, one of medicine's last-resort antibiotics. The discovery signals yet another breach in the dwindling arsenal available to treat critically ill and immunocompromised patients. As superbugs continue outpacing drug development, clinicians face an increasingly narrow set of options for the most severe infections.
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