Legalizing cannabis increases use and addiction – unless it is tightly controlled
Peer-Reviewed Publication
Updates every hour. Last Updated: 18-Jun-2026 06:16 ET (18-Jun-2026 10:16 GMT/UTC)
A major global analysis led by the University of Bath in the UK finds policy reform that removes criminal penalties for cannabis possession, or introduces tightly controlled legalisation, is not associated with increased levels of use. However, legalisation that allows cannabis to be sold for profit is followed by increases in use, addiction and psychiatric hospital admissions.
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A new commentary in Engineering presents a clear four-stage roadmap for shifting the global energy system toward carbon neutrality. Unlike past energy transitions, this transformation demands joint advances in technology, policy, and society. It also introduces the T-ESGO framework to integrate energy, material, carbon, and information flows, stressing innovation, cross-disciplinary work, and global cooperation to drive practical, sustainable progress.
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