It feels like a nightmare scenario for airplane passengers: You take a look out the window in between mini-pretzel bites to see an engine cloaked in flames, shedding pieces of metal mid-flight from 10,000 feet in the air.
The busy beaver game asks: Given a certain number of rules, what’s the maximum number of steps that a Turing machine can take before halting.Of 6,561 possible machines with two rules, the one that runs the longest—six steps—before halting is the busy beaver.
In a one-two punch aimed at China’s rising technological prowess, Taiwan Semiconductor Manufacturing Company (TSMC), the world’s leading contract manufacturer of chips, said it would build a manufacturing plant in the US and the White House announced new rules to block Huawei ’s access to such cutting-edge components.
After three years of tumult and revised scientific analyses, the Trump administration Tuesday formally relaxed Obama-era fuel economy rules that aimed to reduce greenhouse gas emissions and stall the effects of climate change .Under the new rules, automakers will have to meet less stringent targets for cars and light-duty trucks through 2026.
Zammit says he and other automotive designers teach students to add a little extra something to make the vehicle look stable, to look strong—even if it doesn’t add much to the engineering.
One curious pattern cosmologists have known about for decades is that space is filled with correlated pairs of objects: pairs of hot spots seen in telescopes’ maps of the early universe; pairs of galaxies or of galaxy clusters or superclusters in the universe today; pairs found at all distances apart.
FCC chairman Ajit Pai, left, has announced a new proposal to combat robocalls. Still, carriers have argued the FCC does need to clarify whether they can legally implement robocall blocking on an opt-out basis, after a legal challenge to Wheeler’s rule left that in doubt.
Joanna Harper, a trans woman and biophysicist who testified on IAAF’s behalf in the Semenya case, argues that testosterone levels are the most important metric for deciding sex because sports divisions are ultimately split between male and female, and a distinction needs to be made somehow.
Yes, there was.) Several reporters received pitches from publicists about women fighting “ neglected tropical diseases ”; PepsiCo Foundation’s quest to bring gender equality to farming in developing countries; and the documentary Brave Girl Rising , which is about female refugees, features Beyoncé’s music, and is narrated by Thor: Ragnarok and Sorry to Bother You actress Tessa Thompson.
“Our proposal would replace the Obama EPA’s 2015 definition with one that respects the limits of the Clean Water Act and provides states and landowners the certainty they need to manage their natural resources and grow local economies,” said EPA Acting Administrator Andrew Wheeler in a statement announcing the rule.
He also cofounded a company called Boundless, which helps spouses of US workers apply for marriage green cards.Researchers found that more than 91 percent of people who would be affected by the rule are employed, and more than 1.4 million of them have at least some college education.When the rough contours of the Trump administration's public charge proposal first made news this summer, critics condemned the outsized impact the rule change could have on low-income immigrants.
The Trump administration is seeking to roll back regulations on methane leaks from oil and gas facilities. The Trump administration is moving to roll back Obama-era rules intended to reduce leaks of methane from oil and gas facilities.
And in August, the agency proposed replacing the rule on carbon dioxide pollution from coal-fired power plants with a weaker one that would allow far more global-warming emissions to flow unchecked from the nation’s smokestacks.“They’re taking them down, one by one,” said Janet McCabe, the E.P.A.’s top climate and clean-air regulator in the Obama administration.Officials from the E.P.A., the Interior Department and the White House did not respond to emails and telephone calls seeking comment.Industry groups praised the expected changes.
The formulas are complex, but the bottom line is that reducing the emphasis on health makes it tougher to justify a rule.Last week the Trump administration took a crucial step toward de-emphasizing the life and health benefits in this calculus when the Environmental Protection Agency said it would rethink a major regulation that restricts mercury emissions by coal-burning power plants.
That rule would have restricted coal plants’ emission of a different pollutant: carbon dioxide, one of the chief causes of global warming.At the time the Obama administration put forth the mercury regulations, which took more than 20 years to formulate, E.P.A. officials estimated they would save thousands of lives and return economic and health benefits many times their estimated $9.6 billion annual cost.While owners of coal plants fought the rule in the courts, most have since complied with regulation.