Eyeballing it with SVG: Get the Grand Tour from Mike Sierra. Then check out animation and filters.

Adele Morris is a senior fellow in Economic Studies and policy director for Climate and Energy Economics at Brookings. She recently served as a discussant for a paper as part of the Spring 2019 BPEA conference.Her research informs critical decisions related to climate change, energy, and tax policy. She is a leading global expert on the design…

Six years ago today, the BP Deepwater Horizon oil spill occurred in the U.S. Gulf of Mexico with devastating effects on the local environment and on public perception of offshore oil and gas drilling. The blowout sent toxic fluids and gas shooting up the well, leading to an explosion on board the rig that killed…

Image Source: red5standingby Environmental Working Group (EWG), a nonprofit research organization based in Washington, DC, has discovered that many cash register receipts contain levels of Bisphenol-A (BPA) hundreds of times higher than those found in

The oil spill in the Gulf of Mexico reached an important milestone this Tuesday afternoon when BP started their 'static kill' procedure to seal the oil well, and the good news is, that it seems to be working -- so far. In other green news, the

Plus... Shell announces first carbon capture project in the Alberta Tar Sands; Arctic oil and natural gas's high cost to limit their global share.

Yet another sign that the oil industry is facing significant headwinds.

It was a sad day last year when intense lobbying efforts in Congress won out, and a ban on BPA in children's products was blocked. But it seems that China and Malaysia have beaten us to the punch. According to Green Biz, China and

Just when I thought it would be fine to cook with canned tomato sauce - bis-Phenol A recently having been granted toxicology probation - emerges the possibility that BPA can make you obese. Ohhh wait - not

BPA had been found to trigger the release of insulin in nearly twice the amount as when glucose is ingested.

A new study finds those with heart disease had higher concentrations of BPA in their urine.

Under pressure from parents and breast cancer groups, Campbell's Soup says it has transition plan away from BPA in motion

Without a hint of irony, FDA maintains several web pages with helpful information for parents and others wishing to avoid BPA, such as: “What You Can Do to Minimize Your Infant’s Exposure to BPA.”

Where does the FDA stand on a BPA ban?

Beer cans are lined with the stuff, but hey, thats the price you pay for convenience.

Cartoonist Joe Mohr shows how the chemical might have affected the cartoon hero

A new study from the University of Illinois shows how chemical exposure early in life can alter stem cells and cause disease.

Researchers have found that lignin, a compound found in wood, could replace BPA in plastics.

Studies of humans, mice, monkeys, and sheep all point to the same scary conclusion -- that BPA wreaks havoc on the female reproductive system.

What's in that "polymer lining" in every can? A gender-bending hormone that may be really bad for you.

Find out which brands are the best and worst players in the canned food industry right now.

Study assessed the effect of endocrine disrupting chemicals on mice's desire to exercise and found that it makes them lazier.

From one problem to the next...

A new report shines the light on a dirty little 'secret' of canned goods, which has little to do with the food itself, and everything to do with the coating in the can.

And that was after one week of avoiding foods that may have come into contact with the notorious hormone-disrupting chemical!

Nobody should be drinking canned beer. Period. But it is particularly bad for young women.

Scientists have found that the chemicals used to replace BPA over the past 20 years have the same damaging effects.

There is a fundamental logical inconsistency here. Either the stuff is bad for you or it isn't.

Floating residues from the ongoing BP oil 'blowout' in the Gulf are expansive enough to be easily visible from space. Satellite photos of oil on salt water

I'm a big fan of scenario thinking. Although no one can predict "the future," several plausible scenarios can be constructed, informing decisions made difficult by many unknowns. A good decision works in

British Petroleum has created a 22 mile long undersea oil plume, measured as "dispersed" beneath the ocean's surface, stretching from the wellhead, toward Mobile Alabama. Via the Chron: "The thick plume was detected

Gulf Coast states and the federal government agree to the highest fine for an environmental disaster in U.S. history.

Beef Products Inc took its best shot at making up for its silence during weeks of public lashing over what has been dubbed “pink slime,” an additive in ground beef made through a high-tech process that BPI invented.

Just because something is BPA-free doesn't mean it's safe.

The economic free fall from Covid-19 is taking its toll on what had been strong housing demand just a few months ago.

I’ve been working on a pretty large react-router codebase at work. Currently it has around 50~ code splits, which as you can imagine, is a lot of routes. This is going to be a post on the things I’ve learned throughout building out my development / production config and how we are using webpack in production.

###Initial Setup

Before I really dive into how my webpack config is setup and the problems I’ve found, I’ll quickly go over how this app is setup. Currently, there’s one entry point and it looks like this:

import React from 'react'
import { render } from 'react-dom'
import { match, Router, browserHistory } from 'react-router'
import AsyncProps from 'async-props'
import routes from '../routes/index'
/* globals document, window */

const { pathname, search, hash } = window.location
const location = `${pathname}${search}${hash}`

match({ routes, location }, () => {
  render(
    <Router
      render={props => <AsyncProps {...props}/>}
      routes={routes}
      history={browserHistory}
    />,
    document.getElementById('app')
  )
})

It looks like a standard react-router setup, except a couple things are different. For one, there’s way too many routes to have them all in this file, so we are importing the main route object into this file. Second, we are using match on the client side. Without matching first, the client side would try to render before the splits were downloaded causing an error. You can read a little more about match on the client here.

Next, we are using Ryan Florence’s awesome async-props library for loading data into components. It allows me to load data from an api before the server renders components. It will pass the data down to the client for the client-side render, and then data will load as you navigate to new pages automatically.

###Routes

Our main routes file looks like this:

export default {
  component: 'div',
  path: '/',
  indexRoute: require('./index'),
  childRoutes: [
    require('./login'),
    require('./account'),
    ...
  ]
}

There’s a lot more require’s in our app of course. And these are nested pretty deep. The files referenced in the root file have more child routes, and those use require.ensure which you can read about in the webpack docs on code splitting. It tells webpack to make a new bundle, and then load that bundle when require.ensure is called on the client. Here’s an example:

if(typeof require.ensure !== "function") require.ensure = function(d, c) { c(require) }

module.exports = {
  path: 'account',
  getComponent(location, cb) {
    require.ensure([], (require) => {
      cb(null, require('../../views/master/index.jsx'))
    })
  },
  childRoutes: [
    require('./settings'),
  ]
}

There’s a few things going on here. First, we have a function at the top that will polyfill require.ensure. Why? Well, on this project we are server rendering our whole site as well, which I would rather not do, but due to the type of site we are building: we have to. The next thing is the relative require path. I’m using this awesome babel resolver plugin along with webpack’s resolve paths so that I can import files like this:

import Header from '../../master/header'
//becomes
import Header from 'master/header'

Why do I have to use a babel plugin AND webpack’s resolve feature? Once again, doing a server rendered app, the code is ran on the server and also through webpack. In this particular app, I haven’t had time to experiment with webpacking the server. Anyways, if I didn’t use the babel plugin, errors would be thrown on the server, but webpack would work fine. This is one of the common things I have ran into while building this app.

Realizing some things need to be done slightly different on the server or client. You may still be wondering why I am referencing the component as a relative path in the above route example, and that’s because the babel plugin I’m using only works with import and not require. My route objects are the one place that I have these “nasty” looking paths.

##Webpack

I was prompted to make this article after tweeting this out:

webpack splits vs AggressiveMergingPlugin({minSizeReduce: 1.0}) pic.twitter.com/b6kxHEqNcO

— ReactJS News (@ReactJSNews) March 10, 2016

A couple people wanted a better explanation as to what’s happening here. When I was first building my production webpack config, even after using all of these plugins:

new webpack.optimize.CommonsChunkPlugin('vendor', 'vendor.js'),
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.optimize.DedupePlugin(),
new webpack.optimize.UglifyJsPlugin({
  compress: { warnings: false },
  comments: false,
  sourceMap: false,
  mangle: true,
  minimize: true
}),

My bundle looked like this:

That’s pretty huge if you think about it. And I’m not talking about the amount of bundles. I’m talking about the file size. After searching everywhere for a solution to get the bundle size down further, I found webpack’s AggressiveMergingPlugin. This thing is a life saver. As you may have seen from the tweet, the output turns into this:

Just having the main, vendor, and one other bundle brings the whole site under 1MB. I’m using the plugin to only merge files if the size reduction is more than 50%, which is the default.

People talk about code splitting in webpack and think it’s really amazing to load the JS for the page you’re on and nothing more. It sounds great. The problem is that the file size is immensely bigger. If someone more familiar with webpack has a better idea as to why this is, I’d like a better explanation. It isn’t feasable to keep the splits instead of merging them. This site is pretty large, with a lot of routes as you can tell from the screenshots. Codesplitting without merging would cause way more waiting on the client side every time you navigate to a new page. Even if the JS was heavily cached, the first time you hit these pages it will have to load a 300kb bundle for some of them.

##Caching

That takes us to caching. We are about a month away from publicly launching this site, so we haven’t setup the workflow for pushing updates through a cdn, but that will be the end result. For now, in my webpack config, my output object looks like this:

output: {
  path: __dirname + '/public/assets/js/[hash]/',
  filename: '[name].js',
  chunkFilename: '[id].js',
  publicPath: '/assets/js/[hash]/'
},

This is in the production config of course. This way I can cache the files and when I update the code, the hash will change and the browser won’t be caching the old code. I pass in the hash as an env variable at runtime to that the server has the correct path to the assets folder.

##Problems

There were a few big problems I came across while building out a server rendered app with dynamic routes. The first was page titles. How am I supposed to have the right title on the client and on the initial server render? Thankfully, Ryan has yet another solution. react-title-component solves this perfectly.

The next was, how do I hit an api, wait for the response on server render, load new data on route changes, and of course, do this at the component level. As I mentioned before, async-props solves this problem too. It will give you route info so that you can make requests based on things in the url.

The next problem is one that I haven’t fully solved. Webpack is getting really slow. It takes around 20 seconds on a maxed out macbook 15” to build code in production. On the server, it takes more like a minute! If I’m in development mode, it takes around 10 seconds to make the initial build, and sometimes it lags on building the splits on code change. If anyone has insight into this I would love to hear it.

This one goes along with the webpack one, and it is reloading the server. I haven’t tried to webpack the server but I hear doing so works great for this. I don’t think it would fix the problem with webpack being slow though, and in fact it would probably make it even slower.

##Folder structure

I almost forgot to throw this one in here! I’m really happy with the structure of this project. I have a views folder that has all of the same folders and file names as the routes folder. It makes it really easy to find things. These also correspond with the URL to the page. /account/settings will be in views/account/settings.jsx and routes/account/settings.js. The same is true for my tests folder.

##Conclusion

I hope this gave you a good glimpse at how webpack and react router work at a larger scale than you see most blog posts cover. If you have any questions or things that you would like me to talk about that I haven’t already, please leave a comment below and I will update this post! I’m sure that I forgot a few problems and tips writing this. I was thinking this would be a short post but it blew up on me!

Two middle-aged men were sitting at a bench in Shivaji Park, six feet apart.

"Do you have any underlying conditions?" asked the first one.

The second one thought for a while before answering. "I'm generally fit. I work out daily and I eat paleo. But I have blood pressure. Is that an underlying condition?"

"I have blood pressure too!" said the first. "Hot damn. Blood pressure is an underlying condition." The two moved apart from each other another foot.

I'd have told them to be grateful they had any blood pressure at all. Only dead people have no blood pressure. In 2005, at age 53, I was diagnosed with high blood pressure, or hypertension, as many are as they age and their blood vessels get less flexible. Since then, I have been on one cocktail of blood pressure pills or another.

A quick Hypertension 101 here for those who don't have a clue. The heart moves blood through your body by a pumping action that consists of a squeeze and a relax. Each squeeze pushes up the pressure (called the systole) that the blood exerts within the blood vessels, while each relax lowers it (called the diastole). It's like squeezing a tennis ball: think of the maximum pressure you exert as the systole, and the pressure when you release the squeeze as the diastole.

Blood pressure is always represented as two numbers — like 149/83 — indicating the systole and the diastole, and representing the number of millimetres the level of mercury rises to in a machine called a sphygmomanometer. I was told that anything under 120/80 was healthy and optimal.

Being naturally subversive and resistant to authority, I wanted to know who had decided that 120 and 80 were 'normal'. In 2017, the new normal had been declared to be 130/80, down from 140/90. Pharmaceutical companies know that each time the definition of normal blood pressure is lowered, they get millions of new customers, people who had been 'healthy' till then but were instantly redefined as having 'blood pressure' under the new normal — and will require their medication. The 2017 change apparently brought in over 50 million new customers into the blood pressure pills market. It's a billion-dollar industry.

The 2020 normal is 120/80.

Nine of the 11 co-authors of the 2003 blood pressure guidelines had ties to pharmaceutical companies in the form of shares, consulting fees or research funding. One member declared ties to 21 pharmaceuticals. Newer panels are required to disclose conflicts of interest with drug manufacturers who would gain from lowered definitions of normal BP. It seems they stay on the panels nonetheless, having honestly declared their corporate allegiances.

So now you're at a clinic, getting your blood pressure taken. The doctor or nurse may chat with you meanwhile, asking about your family and the next vacation.

There are two reasons why this reading will always be wrong. It is now known that the very sight of a man in a white coat or a nurse walking purposefully towards you creates an immediate spike in your blood pressure. It's called white coat hypertension and is a classic example of the measurer changing the measurement by his very presence.

Other things change the reading too.

Putting the cuff over clothing, rather than a bare arm can add 10-40 mm of mercury (Hg) to a measurement.

Needing to pee can add 10-15 mm Hg.

Having a conversation: an additional 10-15 mm Hg
Dangle your feet or leave your back unsupported — another 5-10 mm Hg.
Even the short walk to the curtained room where they measure your vital statistics will boost your pressure.

There's more — if you'd come at noon, your pressure would have been higher. It starts dropping from late afternoon — unless you go to a rock concert in the evening.
Why am I telling you all this? Because it's very easy for your pressure to show as higher than normal, especially in a medical setting. This makes it easy for the doctor to look grim and shake his head and start you off on some hypertension pill or the other for the rest of your life.

I used to be on Pfizer's Norvasc. In 2003 alone, that drug notched up sales of over $5 billion and was the world's best-selling blood pressure drug. Someone even suggested that children over three should be started on preventive BP medication.

The next time you have your BP read, insist that it be done the right way —
1 Sit still and relax for five minutes.
2 Do not speak to anyone.
3 Calm your mind, don't think of office or home problems.
4 Take two readings, a minute apart.
5 Make sure the nurse records the second reading.
6 Send me a letter of thanks.

Here, viewed from there. C Y Gopinath, in Bangkok, throws unique light and shadows on Mumbai, the city that raised him. You can reach him at cygopi@gmail.com
Send your feedback to mailbag@mid-day.com

The views expressed in this column are the individual's and don't represent those of the paper

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Good news for all patients with high blood pressure (hypertension). Getting a flu shot can ultimately lower the risk of death in most high BP patients.

Frequently getting exposed to chemicals that are used to replace BPA can put you at a higher risk of developing high blood pressure (hypertension), reports a new study.

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