the period of heavy bombardment in the context of the development of our solar system?

Do you think it is: 1. The period about 65 million years ago, when an impact is thought to have led to the extinction of the dinosaurs 2. The time before planetesimals finished accreting into planets, during which many growing… Continue Reading

Solar Power versus United Kingdom's Solar Rqmt on all new Gov. Bldgs.?

Solar power is renewable, but it’s not cheap because the US has not invested enough in Research & Development. Currently in the United Kingdom all new government buildings are required to have solar panels. So there goes all the theories… Continue Reading

Why doesn't the Dept. of Urban Development, (HUD), require solar panels in all new housing?

Not only should the use of solar pannels be used but wind generators. I see housing going up everywhere and not a solar pannel in sight. Out West, we are in a drought, wet lands and forests are being encroched… Continue Reading