Skip to main content

Re-inventing the wheel

The world is in a tizzy over the prospects of climate change caused by the increasing concentration of green house gases in our atmosphere. Carbon dioxide emissions from burning fossil fuels are the main culprit. Back in the 1970's I had to learn the concentration of various gases in our atmosphere for junior chemistry and I still remember that CO2 was 0.03%. Today that figure is closer to 0.04%. That's a pretty big increase in 30 years so you might imagine that a new invention aimed at capturing dioxide from the air would be a good thing. Global Resarch Technologies claim to have invented just such a device . Yet I am not convinced. For one thing where is the energy to manufacture and power these things going to come from - and will generating that energy not entail even further emissions of CO2? For another thing the device claims to produce a pure stream of Carbon Dioxide from the air. What exactly will be done with this CO2? My real objection though comes from a nagging feeling that I am sure I have already heard about a device that does this. Something that extracts CO2 from the atmosphere, that runs on solar power with no harmful emissions and stores the carbon in a compact environmentally friendly way. Oh yes, I remember now - here is a picture of one of these remarkable carbon sequestering devices.

Comments

Popular posts from this blog

My First Gaming Mouse: Logitech G300

I bought a gaming mouse yesterday a Logitech G300, here my initial thoughts. What is a gaming mouse?  There are a wide variety of devices available classified as gaming mice but a few features  seem common: 1. Wired rather than wireless: Although some high end models are wireless wired connections are just better and faster than wireless so most gaming mice stick with wired. As a bonus wired mice don't need batteries so the mouse is lighter.  2. High response rate: 1 to 2ms response rate so the mouse immediately responds to input.  2. High DPI. Gaming mice invariable boast high DPI numbers from 2,000 DPI upwards. This makes the device very responsive to the smallest movements.   3. Adjustable DPI . High DPI improves responsiveness but reduces precision so gaming mice generally allow you to adjust the DPI down for precise work such as pulling off headshots in sniper mode. Generally the mouse allows dpi to be changed on the fly by pressing a button.  4. Extr

Portal 2 two screen coop on one PC.

I mentioned before that I intended to try Portal 2 in "unofficial split screen co-op mode. Well split screen on a small computer monitor is a recipe for a headache especially when the game defies gravity as much as portal. However a minor bit of extra fiddling allowed us to drive two seperate screens from one PC. The Steam forums describes a complicated method of doing this that I couldn't get working so this simpler method which worked for me might be of use to someone. 1. First I followed the instructions in this post to get split screen multi-player working: http://forums.steampowered.com/forums/showthread.php?t=1847904 A minor issue not mentioned is that you need to enable the console from the keyboard/mouse options menu I am using keyboard and one wired Xbox360 controller as suggested. Getting the controller to switch to channel 2 was tricky at first but as Chameleon8 mentions plugging it out and in again during loading works. The trick for me was to do the plug / p

Android Tip 3: Sharing a Folder between multiple users of an Android device

Android has allowed multiple user logins for quite a while now. This is can be very useful for tablets which are shared by family members. Normally Android erects strict Chinese walls between users preventing them from using each others apps and viewing each others files. This is a useful security feature and ensures your kids don't mess up your work spreadsheets when screwing around on the tablet and should also prevent them from buying €1,000 worth of Clash of Candy coins on your account. Sometimes however you really do want to share stuff with other users and this can prove surprisingly difficult. For example on a recent holiday I realised that I wanted to share a folder full of travel documents with my wife. Here are some ways to achieve this. 1. If you have guaranteed internet access  then you can create a shared folder on either Dropbox or Google drive. Either of these has the great advantage of being able to access the files on any device and the great disadvantage of bein