Category Archives: Renewable Energy
“We need to think big, we need to think cheap… Let’s invent to the price point of the electricity market. If you want to make something dirt cheap – make it out of dirt. Preferably dirt which is locally sourced!”
This is an entertaining and erudite TED Talk from MIT’s Materials Engineer Donald Sadoway which outlines our current problem of grid-level electricity storage, describes how batteries work and goes on to explain where we could go with molten metal batteries. He describes his passion as science and service to society, which is a great sentiment.
This is a good link to our units on Chemistry, Physics and Environmental Science and would make a fine starting point for a One World project. How can science positively impact the world?
In 2007, Leonardo DiCaprio released his environmental call-to-arms, The 11th Hour. And it’s very good. It really knocks home the old proverb that we are not inheriting the Earth from our ancestors, but borrowing it from our children.
Update 2009: the whole film is available on GoogleVideo (as all good documentaries should be):
The movie contains contributions from the likes of Stephen Hawking, Nobel-winner Wangari Maathai and David Suzuki. Particularly useful is Gloria Flora‘s sentiment that we all vote, every day – even those who are too young to cast a ballot – by making informed choices about what we consume, spend our money on and throw away.
The first half of the movie is a talking-heads and imagery look at our impacts on the Earth, with plenty of soundbites and starting-points for further discussion. The political middle section describes how economic growth and interests are driving destruction. The final act is a great collection of ideas and hope – a call to arms and a realisation that the environmental movement is growing quickly and strongly. But is it going to be in time to save our species and the thousands that we drive to extinction each year?
Now here’s Leo’s video message (including the ‘vote’ quote from Gloria Flora):
For some further reading, go to the 11th hour Action website.
IB Biology students:
Higher Level students: pay attention to the parts about the role of trees in the environment, in particular through water-uptake. Also, do you understand how mycofiltration (using fungal mycelia) could be used to clean polluted soils?
For good measure, here’s Linkin Park’s accompanying music video, What I’ve Done :