The Universe 25 experiment was a rodent population study conducted by American behavioral ecologist John B. Calhoun between 1968 and 1972. Carried out at the National Institute of Mental Health (NIMH), the experiment aimed to investigate the effects of extreme population density on social structures. Carried out at the National Institute of Mental Health (NIMH), the experiment aimed to investigate the effects of extreme population density on social structures.

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A Bombardier Learjet 45 private jet attempting to land at Baramati Airport in India’s Maharashtra state on the morning of 28 January 2026 lost control during landing, crashed near the runway threshold, and caught fire shortly afterward. Maharashtra Deputy Chief Minister Ajit Pawar, along with his personal security officer, a cabin crew member, and two pilots on board the aircraft operated by VSR Ventures, lost their lives at the scene. India’s Directorate General of Civil Aviation (DGCA) has launched an investigation to determine the cause of the crash.
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