In this clip from Planet Green's "G Word," correspondent David Newsom highlights the loss of naturally occuring reefs and how artificial reefs can replenish habitats for marine life.
WHAT'S INSIDE: ENVIRONMENTAL SCIENCE
- Earth Science
- Energy Production
- Environmental Terms
- Green Science
- Green Technology
Alternative energy usually means something is mined, refined, collected or grown. But gravity-powered floor lamps rely only on a force of nature -- and the strength of a human being.
Green issues make their way through the news and debates on a frequent basis. What are some of the top 10 green issues of 2008?