A gesture of love and solidarity from estates and communities in East London to Grenfell and their local community.

AI is often seen as a magical fix-all. It's not, but it is, says Sims Witherspoon, a powerful tool for unlocking communities' problem-solving capacities. Witherspoon is a program manager at Google's DeepMind, which made headlines when it reduced energy required to cool Google Data Centres by 40 per cent. Energy consumption is one of the problems AI can be used for, and DeepMind is working on it. ABOUT WIRED SMARTER Experts and business leaders from the worlds of Energy, Money and Retail gathered at Kings Place, London, for WIRED Smarter on October 9, 2018. Discover some of the fascinating insights from speakers here: http://wired.uk/V29vMg ABOUT WIRED EVENTS WIRED events shine a spotlight on the innovators, inventors and entrepreneurs who are changing our world for the better. Explore this channel for videos showing on-stage talks, behind-the-scenes action, exclusive interviews and performances from our roster of events. Join us as we uncover the most relevant, up-and-coming trends and meet the people building the future. ABOUT WIRED WIRED brings you the future as it happens - the people, the trends, the big ideas that will change our lives. An award-winning printed monthly and online publication. WIRED is an agenda-setting magazine offering brain food on a wide range of topics, from science, technology and business to pop-culture and politics. CONNECT WITH WIRED Web: http://po.st/WiredVideo Twitter: http://po.st/TwitterWired Facebook: http://po.st/FacebookWired Google+: http://po.st/GoogleWired Instagram: http://po.st/InstagramWired Magazine: http://po.st/MagazineWired Newsletter: http://po.st/NewslettersWired

We are currently at a 42 year low for murder, says Karyn McCluskey, and it's not low enough. McCluskey is the chief executive of Community Justice Scotland and her work has resulted in the successful reduction in violent crime in Glasgow – effectively changing the city. Mapping and analysing the scale of the problem taught her that there were places to start: interrupt the transmission of the 'disease' of homicide; change behaviours; change norms.

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Professor of urban planning Kate Nelischer answers your questions about real estate and the US housing crisis from Twitter. Why are homes so expensive? How is AirBnB affecting the housing market? Why can't millennials afford a home? Answers to these questions and many more await—it's Housing Support.Architectural models by Reid Architecturehttps://reidarc.com/The graph shown at 0:18 depicts income data adjusted for inflation, while the rental price is not. Rental prices are still outpacing income growth, though the increase of rental prices since 1985 is not 100% when adjusted for inflation.Director: Lisandro Perez-ReyDirector of Photography: Constantine EconomidesEditor: Louville Moore; Louis LalireExpert: Dr. Kate NelischerLine Producer: Joseph BuscemiAssociate Producer: Brandon WhiteProduction Manager: Peter BrunetteProduction and Equipment Manager: Kevin BalashCasting Producer: Nick SawyerCamera Operator: Roberto HerreraSound Mixer: Brett Van DeusenProduction Assistant: Sonia ButtPost Production Supervisor: Christian OlguinPost Production Coordinator: Ian BryantSupervising Editor: Doug LarsenAdditional Editor: Paul TaelAssistant Editor: Billy Ward

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Like any Fortune 500 company, public safety agencies should be active users of social media if they want to thrive in todays information-rich environment. Content on the big four platforms—Facebook, Instagram, Twitter, and YouTube—is accessed by more than a billion people worldwide. For many people social media is the first thing they check in the morning and the last thing they see before they sleep at night.

While most of us all have personal social media accounts where we post our cat videos and vacation photos, there are still agencies that don’t have official social media presences. My argument is that all public safety entities should maintain an active presence on at least one of the larger social media platforms, because the benefits of doing so far outweigh the costs in time and effort.

While there are many reasons why every agency should have a vibrant presence online (many of which are unique to individual departments), my favorite benefits all relate to recognition: staff recognition, agency recognition, and interagency recognition.

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The price action over the past couple of weeks indicates good buying interest

Recently I interviewed Stefan Judis for my upcoming book. We discussed CSS custom properties, and something interesting happened.

We had a period of a few minutes where we were talking past one another, because, as it turns out, we have completely opposite ideas about the use of CSS custom properties. I had never considered his approach, and I found it interesting enough to write this quick post.

Option 1

Take several site components, each with their own link and hover/focus colours. We want to use custom properties for those colours. Exactly how do we do that?

Before my discussion with Stefan that wasn’t even a question for me. I would do this:

.component1 {
	--linkcolor: red;
	--hovercolor: blue;
}

.component2 {
	--linkcolor: purple;
	--hovercolor: cyan;
}

a {
	color: var(--linkcolor);
}

a:hover,a:focus {
	color: var(--hovercolor)
}

I set the normal and hover/focus colour as a custom property, and leave the definition of those properties to the component the link appears in. The first and second component each define different colours, which are deployed in the correct syntax. Everything works and all’s well with the world.

As far as I can see now this is the default way of using CSS custom properties. I wasn’t even aware that another possibility existed.

Option 2

Stefan surprised me by doing almost the complete opposite. He uses only a single variable and changes its value where necessary:

.component1 {
	--componentcolor: red;
}

.component1 :is(a:hover,a:focus) {
	--componentcolor: blue;
}
	
.component2 {
	--componentcolor: purple;
}

.component2 :is(a:hover,a:focus) {
	--componentcolor: cyan;
}
	
a {
	color: var(--componentcolor)		
}

At first I was confused. Why would you do this? What’s the added value of the custom property? Couldn’t you just have entered the colour values in the component styles without using custom properties at all?

Well, yes, you could. But that’s not Stefan’s point.

The point

In practice, component definitions have way more styles than just colours. There’s a bunch of box-model properties, maybe a display, and possibly text styling instructions. In any case, a lot of lines of CSS.

If you use custom properties only for those CSS properties that will change you give future CSS developers a much better and quicker insight in how your component works. If the definition uses a custom property that means the property may change in some circumstances. If it uses a fixed definition you know it’s a constant.

Suppose you encounter this component definition in a codebase you just inherited:

.component {
	--color: red;
	--background: blue
	--layout: flex;
	--padding: 1em;
	--borderWidth: 0.3em;
	display: var(--layout);
	color: var(--color);
	background: var(--background);
	padding: var(--padding);
	border: var(--borderWidth) solid black;
	margin: 10px;
	border-radius: 2em;
	grid-template-columns: repeat(3,1fr);
	flex-wrap: wrap;
}

Now you essentially found a definition file. Not only do you see the component’s default styles, you also see what might change and what will not. For instance, because the margin and border-radius are hard-coded you know they are never changed. In the case of the border, only the width changes, not the style or the colour. Most other properties can change.

The use of display: var(--layout) is particularly revealing. Apparently something somewhere changes the component’s layout from grid to flexbox. Also, if it’s a grid it has three equal columns, while if it’s a flexbox it allows wrapping. This suggests that the flexbox layout is used on narrower screens, switching to a grid layout on wider screens.

Where does the flexbox change to a grid? As a newbie to this codebase you don’t know, but you can simply search for --layout: grid and you’ll find it, probably neatly tucked away in a media query somewhere. Maybe there is a basic layout as well, which uses neither flexbox nor grid? Search for --layout: block and you’ll know.

Thus, this way of using custom properties is excellently suited for making readable code bases that you can turn over to other CSS developers. They immediately know what changes and what doesn’t.

Teaching aid?

There’s another potential benefit as well: this way of using custom properties, which are essentially variables, aligns much more with JavaScript’s use of variables. You set an important variable at the start of your code, and change it later on if necessary. This is what you do in JavaScript all the time.

Picking an option

Which option should you pick? That’s partly a matter of personal preference. Since the second option is still fairly new to me, and I rarely work on large projects, I am still feeling my way around it. Right at this moment I prefer the first way because I’m used to it. But that might change, given some extra time.

Still, I think Stefan is on to something. I think that his option is very useful in large codebases that can be inherited by other developers. I think it deserves careful consideration.

The study describes the compound’s remarkable ability to disrupt the entry of enveloped viruses into the host’s cell and prevent infection

Written and directed by first-timer Clax, the Telugu dramedy ‘Bedurulanka 2012,’ starring Kartikeya Gummakonda and Neha Shetty, is an indie-spirited narrative that’s delightful in parts 

Due to the summer drought, Islanders have to get 52% of their fruits and vegetables from the mainland because local production cannot meet domestic demand.