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A study finds TRAPPIST-1e lacks atmospheres, challenging assumptions about habitable exoplanets.
A new study finds the exoplanet TRAPPIST-1e lacks detectable carbon dioxide and methane, suggesting many similar "exo-Titan" planets may lack atmospheres, raising questions about how common habitable worlds are—though better telescopes are needed to confirm.
A hypothesis links the Black Death’s spread in 14th-century Europe to volcanic eruptions around 1345, which may have triggered climate disruptions, famine, and increased grain trade from the Mongol Empire to Italy, potentially introducing plague-carrying rats.
Evidence from tree rings and ice cores supports this climate link.
In another study, infected ant pupae emit chemical signals that prompt worker ants to destroy them, preventing colony-wide fungal infections—a self-sacrificial behavior that protects the group.
Un estudio encuentra que TRAPPIST-1e carece de atmósferas, lo que desafía las suposiciones sobre exoplanetas habitables.