- guardian.co.uk, Saturday July 19 2008 00.01 BST
- The Guardian, Saturday July 19 2008
I have been looking at ways of cutting my electricity usage. In my garden is a large pond with a waterfall, which has a pump running all the time. Are there any solar-powered pond pumps on the market that might work as well?
These gizmos are coming on to the market: the £45 Oxygenator Plus from Smart Solar (smartsolar.com) is suitable for some ponds, but is probably not big enough for yours. Take a look at the Sunjet 900 (about £210, also from smartsolar.com), which has a flow rate of 900 litres an hour. Don't forget that your panel will need to be placed in direct sunlight.
I'm trying to buy a webcam for my Mac, but they seem to be Windows-only.
Apple users remain cut adrift in terms of extras for their computers, and webcams are particularly difficult: not only does every new Mac now come with a built-in webcam, but Apple was forced to stop selling its own iSight camera because it was environmentally unfriendly. Your best bet isn't a special model, but a piece of software that enables you to use these ordinary, inexpensive cameras. Visit icanhaz.com/webcam for more information.
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