Environmental degradation is a global crisis demanding immediate action, and the role of environmental awareness, ethics, and pro-environmental behaviour among youth has become central to sustainable futures. This study aimed to assess the level of environmental awareness and environmental ethics among college going students in Ranchi District, Jharkhand, and to examine their relationships with pro-environmental behaviour. A descriptive research design was employed with a sample of 82 students (40 male, 42 female) from Ranchi. Three standardised tools were used: Environmental Awareness Ability Measure (EAAM-J), Environmental Ethics Scale (EES), and Pro-Environmental Behaviour Scale (PEBS-SA). Data were analysed using Pearson's Correlation Coefficient. Majority of students (66.99%) demonstrated high environmental awareness, while 57.78% exhibited high environmental ethics. A significant moderate positive correlation was found between environmental awareness and environmental ethics (r = 0.522, p < 0.05), and a significant low positive correlation between environmental awareness and pro-environmental behaviour (r = 0.306, p < 0.05). Male and rural students exhibited significantly higher environmental awareness than their counterparts. While students demonstrate commendable awareness and ethics, a meaningful gap exists between knowledge, values, and actual behaviour. Environmental education curricula must be revised to be more activity-based, value-centred, and locally relevant to bridge this gap effectively.