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Scientists Make DNA Wires That Carry Electric Current

Scientists Make DNA Wires That Carry Electric Current
DNA, the molecule at the heart of life, is the most powerful and sophisticated information storage device in existence. So it’s no wonder that scientists are attempting to harness its capabilities in computing and electronics. Not only does DNA have the capacity to store vast amounts of data, but it also provides the opportunity to surpass current limitations on reducing the size of electronics. Although we’ve drastically shrunk computers since their advent, scientists can only go so far because a minimum space between transistors-- the main building block of electronic devices-- is required to prevent interference. This means that processors can’t be designed much smaller than what we have around today. DNA could provide us with a unique way get around this, but unfortunately, scientists have faced a considerable challenge with using it in the field of “molecular electronics,” or the use of molecules in the production of electronic components.

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Precise and programmable biological circuits Bio-engineers are working on the development of biological computers with the aim of designing small circuits made from biological material that can be integrated into cells to change their functions. In the future, such developments could enable cancer cells to be reprogrammed, thereby preventing them from dividing at an uncontrollable rate. Stem cells could likewise be reprogrammed into differentiated organ cells. 'Artificial Leaf' Reaches Best Level Of Solar Energy Efficiency Yet Humans have been struggling for years to create clean, renewable energy that doesn't decimate the planet. What's even more infuriating is that plants, waving gently in the breeze all the while, have been creating 'green' energy before mankind even existed. During plant photosynthesis, water and carbon dioxide is turned into glucose and oxygen. Recently, mankind has been trying to learn from plants to produce our own clean, green machines – in this case, artificial leaves.

This is What 2 Cups of Coffee Per Day Will Do To Your Liver - Just Naturally Healthy The health effects of coffee are quite controversial. Depending on who you ask, it is either a super healthy beverage or incredibly harmful. But despite what you may have heard, there are actually plenty of good things to be said about coffee. For example, it is high in antioxidants and linked to a reduced risk of many diseases. However… it also contains caffeine, a stimulant that can cause problems in some people and disrupt sleep. This article takes a detailed look at coffee and its health effects, examining both the pros and cons. News Highlights:To Boldly Go Where No Biomanufacturing Has Gone Before Before humankind can explore strange new worlds and seek out new life and new civilizations, it will have to deal with a weighty down-to-earth constraint: launchpad economics. Every unit of mass of payload that launched into space requires the support of an additional 99 units of mass, with “support” encompassing everything from fuel to oxygen to food and medicine for the astronauts. But mass-efficient payloads should be possible, insist researchers at the University of California, provided space explorers make use of nontraditional biological techniques. In particular, these researchers say synthetic biology should give space missions a boost. The researchers published a techno-economic analysis that appeared online in the Journal of the Royal Society Interface.

News Highlights:Most Cancers Due to Bad Luck, Not Heredity or Lifestyle You eat healthy, exercise regularly, and avoid toxic substances. You even—so far as you know—have “good genes.” You should be protected against cancer, right? Caltech Team Announces Their Creation Of The Artificial Leaf, Part ITrending Solar energy is the perfect energy source, except for one thing: you can’t store it, at least, you couldn’t until now. Five years ago Caltech established the Joint Center for Artificial Photosynthesis (JCAP) along with its partnering institution the U.S. Department of Energy’s Energy Innovation Hub with one goal: creating a cost-effective system that, like plants, uses only sunlight, water, and carbon dioxide to create storable energy. Over the past five years, JCAP researchers at have made major advances toward this goal, and yesterday they reported that they have, in fact, created the first complete, efficient, safe, integrated solar-driven system for splitting water to create hydrogen fuel.

Shafqat's Shared Thoughts: Getting Things Done with TodoList GTD Softwares? There are over 100 web based GTD tool, also more than 100 desktop based GTD tools as well. I tried several and some were wonderful in different aspects. But none were fulfilling or perfect. News Highlights:Bacterial Computer’s Analog Memory Stores Environmental Data in DNA Treating the genome as so much living circuitry, synthetic biologists hope to create designer cells, even “computerized” cells. Such cells could, for example, be used as biosensors to record environmental input, which could be stored for long periods, perhaps as long as the cells keep dividing. Stored information could be read in a variety of ways including DNA sequencing. To date, cells that have been engineered to record environmental information have been capable of digital memory only. That is, they could record only all-or-nothing memories, such as whether a particular event occurred. Now, however, scientists at MIT report that they have created a living system for storing analog memory.

World First: Scientists Observe DNA Shuttling Between Cells, Triggering Tumor Growth In a world first, scientists have demonstrated that a particular type of DNA can shuttle between cells in an animal, a finding that will rewrite textbook science. During their study, the team observed that DNA from a mouse's second genome, or mitochondrial DNA, could be transferred from healthy tissue to tumor cells in mice, promoting cancer growth and spread. Not only could these important findings help further our understanding of cancer and other diseases, but they raise the tantalizing possibility that one day, it might be possible to replace faulty, disease-causing genes with synthetic, custom-designed mitochondrial DNA in a bid to fight a wide variety of illnesses. The work has been published in Cell Metabolism.

The World's First Solar-Powered Sports Car Could Drive Forever Can a road-legal car be powered by the Sun alone? One company thinks so, and they’re planning to unveil a scaled-down version of their proposal later this year. Called “The Immortus,” the two-person vehicle is the work of EVX Ventures, an electric vehicle technology startup based in Melbourne, Australia. The car is decked out in solar panels, covering up to eight square meters (86 square feet), and also has a lithium battery to store energy, between five and 10 kilowatt-hours.

AbstractSpoon Software / HowTo Naming convention: Entries written in ItalicBold refer to identifiers as seen in TDLThings in ItalicBold containing > like Menu:Tools > Preferences > Tasks > Attributes refer to a place to navigate to within TDL (for example the above is a shortcut: Open the Menu Tools, select Preferences ...)Text in rounded brackets indicate mouse or keyboard press (for example {ctrl}+{del}Something like: TDL 4.10|Date: 20060607 indicates that the description was added using TDL Version 4.10 when the corresponding Howto-Entry was verified on the local machine (that means: in most cases the described features should work from this version) The date is the date of the last change of the entry. Dropdown Lists On the main page of TDL there are a couple of dropdown Lists, which do not contain any entries right at the beginning, like:

Animals Fight Bacteria Using Stolen Defense Systems Humans aren’t the only ones on the planet to be engaging in a battle against bacteria; these organisms are also constantly fighting each other over scarce resources. They’re some of the oldest inhabitants of Earth, so they’ve had a while to evolve the sophisticated antibacterial weaponry used to kill the competition. Some bacteria, for example, inject deadly enzymes into rival cells that rapidly degrade their protective walls, causing the contents of the cell to spill out. While it can take millions of years for such sophisticated defense mechanisms to evolve, it doesn’t take them long to spread in bacterial communities. That’s because they can play pass-the-parcel with their genes in a process called horizontal gene transfer.