This Farm Tour Shows The Amazing Power of Aquaponics

This Farm Tour Shows The Amazing Power of Aquaponics
lots of dissolved oxygen makes a happy marine life that feeds vegetables growing on rafts over the shrimp farm!

urbanfarming advances, by Michael Arceneaux Builds A Fantastic Rain Gutter Grow System Grow Bag Garden! on Vimeo

Michael Arceneaux Builds A Fantastic Rain Gutter Grow System Grow Bag Garden! on Vimeo

World's Oldest Solar Device | CleanTechnica

World's Oldest Solar Device | CleanTechnica

According to the great philosopher, upon waking up the eldest son would attach a solar ignitor to his belt as he dressed for the day. It was his duty to focus the solar rays onto kindling to start the family’s cooking fire.

According to another early text, the Zhouli, which describes rituals dating far back into Chinese antiquity, “The Directors of the Sun Fire have the duty of transferring with burning mirrors the brilliant flames of the sun to torches for sacrifice.”

Although scholars found over the years many ancient texts discussing solar ignitors, the discovery of an extant yang sui eluded them for centuries. Quite recently came the Eureka moment. Digging up a tomb that dated to about three thousand years ago, a team of archaeologists found in the hand of a skeleton a bowl-shaped metal object. While the inner side could have passed for a wok, the exterior trough had a handle in its center. That’s what caught the eye of the two archaeologist in charge of the dig, Lu Demming and Zhai Keyong. They immediately brought the relic back to the local museum and ordered its specialists to make a mold from the original and then cast a copy in bronze.

Energy Department Bombshell: LNG Has No Climate Benefit For Decades, IF EVER* | ThinkProgress

Energy Department Bombshell: LNG Has No Climate Benefit For Decades, IF EVER* | ThinkProgress
Yes, despite multiple studies to the contrary, the DOE is asserting that the leakage rate is very low in the U.S. (but not in Russia, of course) — so low that U.S. LNG just happens to be better for Europe than its own coal:

“The high modeled leakage rate for the U.S. LNG scenarios (1.6 percent) is still less than the breakeven percentage for the European scenario (1.9 percent), but slightly higher than the breakeven for the Asian scenario (1.4 percent)…. As previously noted, the calculated breakeven points are the most conservative, so these results do not indicate that natural gas has a higher GHG than coal on a 20-year basis in all cases.”

The DOE is actually asserting that the absurdly low leakage rate of 1.6 percent is conservative! How conservative? Look at this table: