Have read a couple of articles recently that presented ideas for using our road networks as ways to harness the sun’s energy.

The first article, in Inhabitat, talked about a solution from Australian company Going Solar. Their idea combines solar panels with a sound barrier along the sides of freeways that pass through residential areas. This cuts the noise level in the houses, while at the same time supplying them with electricity.

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Here’s a cool idea for those who use internet search regularly (and we all do, don’t we?). Switch to Ecocho. For every 1000 searches performed, these guys, based in Sydney, Australia, will plant two trees.

The search results are from Yahoo, so you know you’ll be getting high quality results still, but you’ll also be helping the environment. According to their site, they’ll be able to remove 1 ton of CO2 for every 1000 searches performed, and the whole thing is audited by KPMG.

That’s a really simple way that everybody can help make a difference. And all you need to do is change that little search box in the top right corner of your browser to use ecocho.com instead of your current search engine.