Thought provoking

71% of the Earth's surface is water-covered, and this sounds like a lot of water. But only 0.12% of Earth's total volume is liquid water. Look at this chart. The largest sphere represents all of Earth's water. Its diameter is about 860 miles and has a volume of about 1,386,000,000 cubic kilometers km³). The blue sphere over Kentucky represents... See more

If God wanted us to build Type 1 Civilization, he would have: 1. put a giant fusion reactor in the sky (emitting blackbody radiation around 5800 K) 2. made 28% of Earth's crust out of a semiconductor with a matching bandgap (~1.1 eV or so) 3. filled the oceans with an alkali… Show more

what if public libraries were open late every night and we could engage in public life there instead of having to choose between drinking at the bar and domestic isolation