Explore the mechanics of flight by building a working model to understand helicopter power! 🚁🔧 This hands-on tutorial demonstrates how helicopters generate lift, how power is distributed, and the ...

When extreme weather strikes, the preparations of emergency planners can have life-or-death consequences. In July 2025, ...

Abstract: In recent years, microplastics (MPs) have become the focal point of an increasing number of studies due to their potentially detrimental effects on human health. Currently, the detection of ...