Draw up a chart to compare the three designs in terms of: • environmental impact • building costs • potential to adapt to changing needs
ETHICAL ISSUES INVOLVED
Text equivalent: Precautionary principleSome environmental groups fear that tidal power could have negative consequences for marine environments. Anticipating such risks is an essential part of the engineers' design task.Text equivalent: Actions and inactions have consequencesClimate scientists say that we have to act very fast to reduce our CO2 emissions to avoid the worst effects of climate change. Tidal power could be a big contributor to this aim.
But projects like the Severn Barage could damage local wildlife. Is it better to act now with current designs for tidal power, or wait until more environmentally friendly designs come along?