Lead pipes? Pfffft! Netscape Cancer says "hold my beer."

Toxic Origins, Toxic Decisions: Biases in CEO Selection:

We examine how selection bias in CEO promotion amplifies risk-taking, using prenatal exposure to pollution as an exogenous shock to individual risk preferences. CEOs born in future Superfund sites are more likely to be promoted internally, suggesting firms reward observed success without recognizing underlying risk tolerance. These "Superfund CEOs" excel in internal roles but pursue riskier external policies once promoted-leading to greater volatility and weaker performance. Our results suggest firms may systematically mistake luck for skill in promotion decisions, filtering for high-variance risk-takers whose traits only become problematic when decision-making shifts to exposed, irreversible domains. In short, Superfund CEOs display performance with essentially lower mean but higher variance.

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If you participate in the public Internet by announcing your own netblocks, you should be familiar with Internet Routing Registries (IRRs) and the Routing Policy Specification Language (RPSL). These are tools that help you be a good network citizen. In a world of BGP hijacks and other problems, these tools matter more than ever. We... Read more »



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Once hailed as a triumph of public health, water fluoridation is now under intense attack in the US.

Despite decades of data proving its efficacy at protecting teeth from decay—particularly children's teeth—two states have now banned the use of fluoride in public water, and communities around the country have followed suit or are considering doing the same. The current US health secretary, Robert F. Kennedy Jr., who is known for his anti-vaccine advocacy and for peddling conspiracy theories, has pledged to remove fluoride from US water.

Now, a pair of researchers at Harvard—Sung Eun Choi and Lisa Simon—have modeled exactly what will happen in the US if Kennedy follows through on his pledge: The number of cavities and decayed teeth in American children and teens (ages 0–19) will increase by an estimated 7.5 percentage points over the first five years. That means there will be 25.4 million more rotten teeth in the mouths of children and teenagers. The dental bills for the added decay will total at least $9.8 billion in that time. Other costs, such as loss of work among parents, were not included, making the financial estimate conservative. But children will also be more miserable, with an estimated loss of 2.9 million quality-adjusted life years.

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AUSTIN, Texas—By just my third lap in the top-spec 2025 Chevrolet Corvette ZR1, I glanced down at the speedometer toward the end of the Circuit of the Americas' long back straight and spied 181 mph (291 km/h) displayed for a split second. Not bad for Chevy’s newest flagship sports car, especially given that the $174,995 ZR1’s twin-turbocharged V8 pumps all 1,064 horsepower to the rear wheels only.

The US’s only purpose-built F1 track made for an excellent setting to taste Corvette’s latest; the ZR1 also commanded your attention while conquering the steep uphill toward the first corner, then winding through a series of challenging corners with plenty of elevation change. Luckily, the car itself is an engineering marvel, and Chevy brought along a team of engineers to explain exactly how the total package comes together to enable such a breathtaking pace, as well as how Chevy can responsibly sell such a powerful car to the general public at all.

The entire point of switching the Corvette’s eighth generation to a mid-engine layout was to improve weight distribution and allow the Corvette to compete against much more exotic competition from European OEMs like Ferrari. The front-engined car's engine bay also lacked the width to add a pair of turbos, due to the suspension and tire orientation, which dictated the use of a supercharger that kept peak power to “just” 755 hp (563 kW) in the last Corvette to wear the ZR1 badge.

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