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In recent years, wireless sensor networks (WSNs) have been an interesting and important research area. Many routing protocols for WSNs have been designed for various objectives. In this paper, a novel energy-aware routing protocol in WSNs is proposed for achieving high energy-efficiency which prolongs the network lifetime and is one of the most important requirements for applications of WSNs. Additionally, communication delay is fully considered. Performance analyses and simulation results show that our proposed protocol has much better performance than directed diffusion and rumor routing in terms of both network lifetime and communication delay.