When you want to sleep in during a cold winter morning - but the dog needs to get out of its crate - you can turn to Les Kelly's Easy Out Gadget. Click a controller and the dog's door opens while you get a few more zzz's.
The controller works from many floors away. Once you push the button, the door pops open and out comes pooch flying up to greet you - or run out the doggy door. The build instructions are relatively easy and this gadget requires few parts.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.