Pollution in the Charles River

pollution
I just read a book called Zodiac by Neal Stephanson and I liked it very much mostly because it takes place in Boston, the rivers and harbor which I know quite well.
It made me realize how different things are now in terms of pollution. In the eighties even the Charles and the Inner harbor were [...]

Tidal Power barrages and ebb generation

It’s such a simple concept I wonder why it’s not a “popular” idea for alternative energy.
Exploit the difference in potential energy between high tide and low tide.  Dig a ditch or basin into a beach or cliff and then make a dam with flood gates and put some turbines where they will be turned by [...]