Jing-Jin-Ji: China is in the midst of a construction spree unparalleled in human history. These are the Megaprojects that will lift China into the future. China wants to make its capital, Beijing, the center of the world’s largest supercity, by merging three provinces into one continuous megalopolis of 130 million people.
Political correctness aims for some very nice results, but its means have a habit of upsetting a lot of people. Might there be an alternative to it? We think there is, and it’s called Politeness.
We tend to imagine that we can only become addicted to a few sorts of things. But real addiction is about using something, anything, to keep our real emotions, fears and hopes at bay. There are many more addicts among us than we think.
We’re used to thinking hugely well of democracy. But interestingly, one of the wisest people who ever lived, Socrates, had deep suspicions of it.
This video is about why it’s harder to successfully land spacecraft and landers and rovers on Mars than on Earth, or Venus, or the Moon, or Titan, or asteroids. It all comes down to atmospheric density! When there’s no atmosphere, you can do a powered descent in a flimsy tinfoil spacecraft like the Lunar Module, and when there’s plenty of atmosphere you can do an unpowered descent via heat shield and parachutes like the space shuttle, Apollo command module, Soyuz, Huygens, etc. But on Mars with its thin air, you have to do both powered & unpowered descent, getting the worst of both worlds.
Mexico’s vast capital — Ciudad de México, the largest city in the Americas — is threatened by a severe water crisis.