Exploratorium strives to produce as much power as it uses

  SAN FRANCISCO (KGO) -- San Francisco's Exploratorium has announced an ambitious goal for its new museum -- to produce as much power as it uses. That will be especially tough because of the sheer size of the 230,000 square foot building. But project engineers think they can make it happen.

Ever since the Exploratorium opened in 1969 the hands-on science museum has been known for innovation. That tradition is on full display in the design of the Exploratorium's new home -- a historic pier now undergoing a complete overhaul.

Pier 15 sticks out more than 800 feet over the water -- a giant warehouse-type building that could eat up a lot of power. So engineers are trying something different: net-zero energy.

Engineer Peter Rumsey is a true believer.

"It was part research, part evangelical, you know, getting people to get excited about it and then just sheer determination," he said.

Net-zero means the building will create at least as much energy as it uses. The power comes from a huge field of high efficiency solar panels on the roof. They're made by a Silicon Valley company called SunPower and they're expected to generate 1.3 megawatts -- about what it takes to run 1,000 American homes for a year.

"What you will notice differently on this panel is no glare, all black, no metal on the front, so all the sunshine that hits the panel goes into the cell," SunPower CEO Tom Werner said.

But that's just the start. To reach net-zero, the new Exploratorium will also have to use less power.

The main reason that net-zero approach is even possible for the new Exploratorium is because the new building sits right next to the cool waters of San Francisco Bay. And in order to heat and cool the building they are able to use this water in a very clever way.

Bay water comes into the building through a giant filter.

"We bring the water in at a very slow speed so no fish get sucked up into it," Rumsey said. "This is the same technology used in an aquarium. There's a set of other filters inside there that get all the small micro-organisms out."

The water is pumped to a big blue tank called a heat exchanger. Inside, state-of-the-art technology pulls heat out of the water in winter and cools it in the summer. Pipes carry it all over the building like a giant radiator.

During the process huge filters are raised and lowered for cleaning and visitors will be able to see it all through a window.

"This room is now going to be part of the exhibit to explain how the building works," Rumsey said.

There will be one brand new building -- a glass observatory with spectacular views. But all the windows make controlling the temperature a challenge.

"So we compensated for that by using a super energy efficient glass," architect Marc L'Italien said.

The tiny ceramic lines at the top and bottom reduce heat and make the glass visible to birds so they don't fly into it.

Work on the redesigned pier is almost 90 percent finished now, but reaching net-zero energy will take more time.

"We actually have 2,000 monitoring points in the new building that will help us determine what's working and what's not," L'Italien said.

That information will be used to fine tune the energy systems over time with the final goal of becoming the largest museum in the country that creates as much power as it uses.

Now is your chance to get in a last visit to the old Exploratorium at the Palace of Fine Arts. It will be open through Jan. 2. The new building is expected to open sometime next spring.

Written and produced by Jennifer Olney

(Copyright ©2012 KGO-TV/DT.

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The power of Twitter

When our blogger went back to Twitter he found a world of opportunities to collaborate with other teachers and beyond. Photograph: Iain Masterton / Alamy/Alamy

I signed up for Twitter several years ago but struggled to understand the point. What is it? What is it for? What information can I share in 140 characters? I did what millions of other people do: followed famous people, sportsmen, rappers, comedians and actors. Much of the time, it turned out, they didn't have anything that interesting to say and, after a few weeks, I gave up on it.

Then, as the site grew in popularity, I decided to give it another chance. I had about 30 followers, mostly my friends. Every few days I would tweet about what I was doing and share songs, music videos and news articles and now and again I would tweet one of the many musicians I followed. Good fun but not particularly productive.

As time went on I began to take tweeting more seriously, posting more about technology and educational issues. If I saw an interesting news article, I would tweet it. I followed people more relevant to my profession, mainly users tweeting about politics, education and technology. The more I read, the more I retweeted. I started to gain more followers, which encouraged me to tweet more.

I began to understand what Twitter was about and what a fantastic resource it was for a teacher.

In fact, Twitter is the reason I am writing this blog. Back in January, when the education secretary was, it seemed, washing his hands of ICT at BETT, I lost it on Twitter. I have never been a fan of Michael Gove - after all, he seems to be doing everything in his power to destroy the teaching profession as we know it with his badly-thought-through policies and ill-informed rhetoric.

But this was the straw that broke the camel's back. An hour or so after I tweeted my disapproval, though, some good news: @GuardianTeach got in touch and asked me to write a blog based on my tweets. I was hugely excited and spent that evening channelling my fury into a post on the subject. Then, the day after it was published, I received another message on Twitter, this time from Sky News. They wanted me to do a live interview.

All this from a few tweets? Yes - Twitter really is that powerful.

The teaching and education community on Twitter is truly inspirational. I have learnt so much from reading tweets posted by all kinds of people working across the sector. Many of the resources, ideas and technologies I have read about I have been able to use in my classroom and school. In turn, I share my ideas and resources.

Twitter is a fantastic collaborative tool. As teachers, how often do we get to visit other schools? In my experience, very rarely. Twitter has enabled me to collaborate with teachers in schools across the country. Combine this with cloud services such as DropBox and Google Docs and you can create and share resources and ideas quickly and easily.

The site is also a great place for discussion. It is amazing how creative you can be in 140 characters. Teachers, academics, technologists and other experts come together on Twitter to chat and discuss a whole range of topics – you can follow and contribute to these discussions by using hash tags.

When used responsibly Twitter can be incredibly useful to students, too. I held a senior assembly last month focusing on how students could benefit from using the site. It will be interesting to find out how many have started to do so.

There are some downsides. Twitter does have a problem with spam, which won't ruin your enjoyment or detract from the site's usefulness but can be a tad annoying. And every now and again you can be followed by a fake account. These are easy to spot most of the time as they will have posted very few tweets and won't have many followers, if any at all. Generally these accounts are accompanied by a photo of a scantily clad woman and are easily blocked - although they often disappear after a few days if you ignore them. The biggest downside for me, and this is very much a personal opinion, is how addictive I find the site.

If you are on Twitter already, I am sure you can think of many more ways the site could be used as an education resource. And if you haven't signed up yet, give it a go. You won't regret it.

• Matt Britland is head of ICT at Kingston Grammar School. He has been teaching for just over six years and taught in both state and independent schools. Follow him on Twitter @mattbritland.

Could you be one of our bloggers?

Do you have something you want to share with colleagues – a resource of your own and why it works well with your students, or perhaps a brilliant piece of good practice in teaching or whole school activity that you know about it? If so please get in touch. If you would like to blog on the Guardian Teacher Network please email emma.drury@guardian.co.uk and please don't be shy about commenting on blogs on this page.

View the original article here

The power of Twitter

When our blogger went back to Twitter he found a world of opportunities to collaborate with other teachers and beyond. Photograph: Iain Masterton / Alamy/Alamy

I signed up for Twitter several years ago but struggled to understand the point. What is it? What is it for? What information can I share in 140 characters? I did what millions of other people do: followed famous people, sportsmen, rappers, comedians and actors. Much of the time, it turned out, they didn't have anything that interesting to say and, after a few weeks, I gave up on it.

Then, as the site grew in popularity, I decided to give it another chance. I had about 30 followers, mostly my friends. Every few days I would tweet about what I was doing and share songs, music videos and news articles and now and again I would tweet one of the many musicians I followed. Good fun but not particularly productive.

As time went on I began to take tweeting more seriously, posting more about technology and educational issues. If I saw an interesting news article, I would tweet it. I followed people more relevant to my profession, mainly users tweeting about politics, education and technology. The more I read, the more I retweeted. I started to gain more followers, which encouraged me to tweet more.

I began to understand what Twitter was about and what a fantastic resource it was for a teacher.

In fact, Twitter is the reason I am writing this blog. Back in January, when the education secretary was, it seemed, washing his hands of ICT at BETT, I lost it on Twitter. I have never been a fan of Michael Gove - after all, he seems to be doing everything in his power to destroy the teaching profession as we know it with his badly-thought-through policies and ill-informed rhetoric.

But this was the straw that broke the camel's back. An hour or so after I tweeted my disapproval, though, some good news: @GuardianTeach got in touch and asked me to write a blog based on my tweets. I was hugely excited and spent that evening channelling my fury into a post on the subject. Then, the day after it was published, I received another message on Twitter, this time from Sky News. They wanted me to do a live interview.

All this from a few tweets? Yes - Twitter really is that powerful.

The teaching and education community on Twitter is truly inspirational. I have learnt so much from reading tweets posted by all kinds of people working across the sector. Many of the resources, ideas and technologies I have read about I have been able to use in my classroom and school. In turn, I share my ideas and resources.

Twitter is a fantastic collaborative tool. As teachers, how often do we get to visit other schools? In my experience, very rarely. Twitter has enabled me to collaborate with teachers in schools across the country. Combine this with cloud services such as DropBox and Google Docs and you can create and share resources and ideas quickly and easily.

The site is also a great place for discussion. It is amazing how creative you can be in 140 characters. Teachers, academics, technologists and other experts come together on Twitter to chat and discuss a whole range of topics – you can follow and contribute to these discussions by using hash tags.

When used responsibly Twitter can be incredibly useful to students, too. I held a senior assembly last month focusing on how students could benefit from using the site. It will be interesting to find out how many have started to do so.

There are some downsides. Twitter does have a problem with spam, which won't ruin your enjoyment or detract from the site's usefulness but can be a tad annoying. And every now and again you can be followed by a fake account. These are easy to spot most of the time as they will have posted very few tweets and won't have many followers, if any at all. Generally these accounts are accompanied by a photo of a scantily clad woman and are easily blocked - although they often disappear after a few days if you ignore them. The biggest downside for me, and this is very much a personal opinion, is how addictive I find the site.

If you are on Twitter already, I am sure you can think of many more ways the site could be used as an education resource. And if you haven't signed up yet, give it a go. You won't regret it.

• Matt Britland is head of ICT at Kingston Grammar School. He has been teaching for just over six years and taught in both state and independent schools. Follow him on Twitter @mattbritland.

Could you be one of our bloggers?

Do you have something you want to share with colleagues – a resource of your own and why it works well with your students, or perhaps a brilliant piece of good practice in teaching or whole school activity that you know about it? If so please get in touch. If you would like to blog on the Guardian Teacher Network please email emma.drury@guardian.co.uk and please don't be shy about commenting on blogs on this page.

View the original article here