Half-mile tall tower to supply electricity to 150,000 Arizona homes

An ambitious solar energy project on a massive scale is about to get underway in the Arizona desert. EnviroMission is undergoing land acquisition and site-specific engineering to build its first full-scale solar tower. 

The mammoth 800-plus meter (2625 ft) tall tower will instantly become one of the world's tallest buildings. Its 200-megawatt power generation capacity will reliably feed the grid with enough power for 150,000 US homes, and once it's built, it can be expected to more or less sit there producing clean, renewable power with virtually no maintenance until it's more than 80 years old.

Enviromission's solar tower is a simple idea taken to gigantic proportions. The sun beats down on a large covered greenhouse area at the bottom, warming the air underneath it. Hot air wants to rise, so there's a central point for it to rush towards and escape; the tower in the middle. And there's a bunch of turbines at the base of the tower that generate electricity from that natural updraft.

A few dozen solar towers the same size as this project could completely replace the existing, primarily coal-based, energy supply for Los Angeles' 3.7 million-odd residents.

How Rupert Murdoch dragged media into the swamp - Rolling Stone Politics

If you look at newspapers and TV stations as mere businesses, not as public institutions with unique ethical standards, then you’ll notice a few things very quickly. One is that the Edward R. Murrow model of responsible news is kind of a sucky commercial product. Nobody who is in it for the money is going to ride that horse voluntarily.

The other is that the converse to the Murrow model is resoundingly true: that such things as hatred, resentment, narcissism, fear, secret lusts, and, yes, Schadenfreude have limitless markets, and businesses based upon sales of those things can compete with anything, from investment banking to consumer retail to drug trafficking. People will not stop what they’re doing to listen to a lecture about the dangers of dioxin poisoning, or corruption in Pentagon contracting. But they will stop to gawk at a headless body hanging out of the windshield of a wrecked car.

This was the basic insight that propelled Murdoch to his fortune.

Can a playground be too safe? - NYTimes

Researchers are questioning the value of safety-first playgrounds. Even if children do suffer fewer physical injuries — and the evidence for that is debatable — the critics say that these playgrounds may stunt emotional development, leaving children with anxieties and fears that are ultimately worse than a broken bone.

“Paradoxically,” the psychologists write, “we posit that our fear of children being harmed by mostly harmless injuries may result in more fearful children and increased levels of psychopathology.”

Is there anything good about men?

Consider this question: What percent of our ancestors were women?

It’s not a trick question, and it’s not 50%. True, about half the people who ever lived were women, but that’s not the question. We’re asking about all the people who ever lived who have a descendant living today. Or, put another way, yes, every baby has both a mother and a father, but some of those parents had multiple children.

Recent research using DNA analysis answered this question about two years ago. Today’s human population is descended from twice as many women as men.

I think this difference is the single most underappreciated fact about gender. To get that kind of difference, you had to have something like, throughout the entire history of the human race, maybe 80% of women but only 40% of men reproduced.

I think I've shared this before, but it's interesting the second time through too.

The most important chart in health policy

If health is a luxury good, why should we expect the health spending trajectory to change?

The chart shows that on a log-log scale, the relationship between per capita national health expenditures and per capita GDP is ram-rod straight and has been since 1935.* Based on several statistical tests, Woodward and Wang conclude that there are

no significant changes in either the intercept or the slope for the years of any of the major reforms of the period, including the introduction of Medicare and Medicaid in 1966, in the years following Nixon’s Wage and Price Controls and the health planning legislation of the early 1970s, in the years following Medicare’s introduction of the Prospective Payment System in 1984, or after the widespread adoption of managed care in the 1990s.

With such overwhelming evidence from our past that, despite our efforts, this national health spending curve has not bent, why do we think the future will be much different?

Speed matters: how Ethernet went from 3Mbps to 100Gbps, and beyond

Ethernet won the battle for LAN standardization through a combination of standards body politics and a clever, minimalist—and thus cheap to implement—design. It went on to obliterate the competition by seeking out and assimilating higher bitrate protocols and adding their technological distinctiveness to its own. Decades later, it had become ubiquitous.

If you've ever looked at the network cable protruding from your computer and wondered how Ethernet got started, how it has lasted so long, and how it works, wonder no more: here's the story.