If they’re in the wild, you can count them with a drone. If they’re in a zoo, you can give ‘em an iPad. Monkey business and more in this week’s green tech finds.
Wash your own diapers and grow your own soap: Cloth diapers have big environmental advantages, but they also require a lot more effort than disposables. The Swish is a diaper washing system that not only runs on solar power, but also uses greywater to grow soapnuts. (via Earthtechling and @crispgreen)