Activity for March Ho
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
How much energy would it take to ignite a brown dwarf? The Halo video game's extended universe book Halo: Evolutions describes the Battle of Psi Serpentis, in which a superjovian planet is converted into a brown dwarf via massive nuclear bombardment of its core, destroying the vastly more powerful pursuing Covenant alien fleet. The Covenant fleet re... (more) |
— | over 8 years ago |
| Answer | — |
A: How can I make a net beneficial genetic trait occur only in a small fraction of the population, sustained? We can look to sickle-cell anaemia for an example. Three quarters of sickle-cell cases occur in Africa. A recent WHO report estimated that around 2% of newborns in Nigeria were affected by sickle cell anaemia, giving a total of 150,000 affected children born every year in Nigeria alone. The carr... (more) |
— | over 9 years ago |
| Question | — |
How big must a building/spaceship be to create an indoor weather system? The NASA Vehicle Assembly Building and the proposed Nazi Volkshalle are cited to be "big enough for weather systems to form inside them". The building has at least 10,000 tons of air conditioning equipment, including 125 ventilators on the roof supported by four large air handlers (four cylindric... (more) |
— | over 9 years ago |