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Listen to part of a lecture in an environmental science class. Professor: Now, when we talk about renewable energy, solar and wind often come to mind. But there's another source that's gaining attention: tidal energy. Unlike solar and wind, which depend on weather conditions, tidal energy is predictable because it relies on the gravitational pull of the moon and the sun. This predictability makes it a reliable baseload power source. However, the implementation is not without challenges. First, tidal turbines need to be placed in areas with strong tidal currents, which are often in narrow straits or estuaries. These locations can be ecologically sensitive, and the turbines may impact marine life. Second, the initial construction costs are high, especially for underwater infrastructure. Maintenance is also tricky because the equipment is submerged and subject to corrosion. Despite these hurdles, countries like the UK and South Korea are investing in pilot projects. Some researchers are exploring smaller, less intrusive turbines that could be deployed in arrays. The key is to balance energy generation with environmental stewardship. So, while tidal energy has potential, it's not a one-size-fits-all solution.