It does indeed look nice, but also like it'll be difficult to clean. It'll need at least twice the time, twice the detergent and twice the water. I really don't think this concept is well-engineered at all.

Lucifer (lat. lux = light, ferre = to bring) is a title of the planet Venus (and the goddess it represents) both in Greek and Roman mythology as well as the Christian term for Satan (I have to add that "Lucifer" isn't mentioned to be equal to Satan in any part of the Bible). Oh, and last but not least: it's the user name of the person on rank 17 of the current top commenter board on FunSubstance.

The thermostat is checking the room's temperature constantly and regulates it if necessary. The teacher hasn't got access to its controls but has apparently found a way to trick it instead.

Google knows everything about you. Everything.

It's called Joshiraku.

It's a simple matter of definition. To apply to it a celestial body needs to meet three prerequisites: First: it needs to orbit a fixed star. Check. Second: it must have enough mass to reach the so-called hydrostatic equilibrium (which means it has to have a round shape). Check. And last: it must have cleared its orbit from other celestial bodies such as asteroids et cetera. Not check. That's why Pluto is considered a Trans-Neptunian object or dwarf planet (this terms have not exactly the same meaning but both apply to Pluto) as guest has already said. However, in our hearts Pluto will always be the ninth planet! :)

This bed really floats due to the power of very strong magnets inside it and inside the floor that repel each other. The wires are just there to hold the bed in place. If I remember correctly it was designed by Dutch architects.