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Joby takes first flight of its hybrid demonstrator aircraft in Marina

The demonstrator aircraft builds on Joby's all-electric air taxi platform and integrates a hybrid turbine powertrain.

India Air Quality Update: Most Polluted Cities Record Hazardous AQI Levels

India's national AQI at severe level 251; Naultha worst at 1071. Delhi records 387-470; PM2.5 dominates. N95 masks and air ...