Tensions surged as Russian drones breached Polish airspace, prompting Warsaw to invoke NATO’s Article 4 and scramble allied forces. Several drones were shot down, marking a significant escalation as it’s the first time a NATO member engaged Russian objects within its territory. Post navigation Spaceflight increases aging: NASA study finds blood-forming stem cells at risk ‘My first instinct was that people are losing lives’: Dinesh Karthik on Bengaluru stampede