Alternative Energy Sources (Science at the Edge)

Can energy efficiency solve our problems?How will the Three Gorges Dam affect its surrounding environment?Are wind farms a scar on the landscape?The Science at the Edge series takes a look at the latest developments and theories that are always intriguing, but may give rise to controversy and concern. It highlights science that is relevant to the lives of many people, and includes provocative discussion themes. Make up your own mind about these cutting edge topics.Alternative Energy Sources looks at the different options for replacing fossil fuels. It explores how the energy potential of the oceans can be captured using wave power generators, how solar energy could be captured with solar paint and solar satellites, and how nanocrystals boost photovoltaic cell charge. It discusses the environmental concerns surrounding genetically modifying crops for use as biofuels, whether or not all cars could be run on hydrogen fuel cells, if nuclear power is safe, and how underwater kelp forests could be the key to boosting biogas production.