Activity for colmde‭

Type	On...	Excerpt	Status	Date
Question	—	Could you grow plants from nothing (or very little) using hydoponics? If you arrive at a distant planet you mean to colonise, without enough food for the long term - just maybe a couple of plants and a bunch of seeds and enough food in storage to keep you going for the time being, could you develop that into a farm to feed a large population over time using hydroponics... (more)	—	about 8 years ago
Question	—	Mistake an uninhabitable planet for an inhabitable one Given advanced enough telescopic technology, would it be possible to detect that a planet in the order of 50 light years away is inhabitable? (i.e. without having to actually go there) I'm just looking for the basics here - presence of water, enough oxygen in the atmosphere, temperature, and sunligh... (more)	—	about 8 years ago
Question	—	Geothermal vents as main source of heat in atmosphere On Earth, there are geothermal vents - heat coming from underground vents that support life at the bottom of the ocean where the sun cannot reach. My question is, would this be possible to support life in the atmosphere of a planet as the only source of heat? I'm thinking of a planet with these vent... (more)	—	over 8 years ago
Question	—	How could a computer teach an 18 year-old to function in society Imagine an advanced A.I. with access to the brain of an 18-year-old. However, this 18-year-old has had no exposure to humanity or the outside world until now, the only information he has received is information fed to him by the computer. The computer now needs to introduce him to society. The typ... (more)	—	about 9 years ago
Question	—	Earth's rotation stopped Let's say through some magic or other, the Earth's spin came to a halt (to the point that the same side now always faces the Sun) How would this process feel? Obviously it would depend on how long it took to do so, so let's say over the course of an hour. This question is specifically about the ef... (more)	—	over 9 years ago