Intermediate Word: 
  (a) to weaken  (b) to strengthen  (c) to belch   (d) crested 
Difficult Word: - intendent  (a) purposeful  (b) Latin American district administrator  (c) intrusive  (d) concierge

Nanotech Improving Energy Options - SpaceDaily  Nanotechnology could help revolutionize the energy industry, producing advances such as solar power cells made of plastics to environmentally friendly batteries that detoxify themselves, experts told United Press International. Because nanomaterials have far more surface area for chemical reactions or storage, they can become super-catalysts. Electrical and thermal properties and strength of materials also can improve dramatically. One nanotech firm, mPhase Technologies in Norwalk, Conn., is partnering with Lucent Technologies to commercialize nanotechnology by creating intelligent batteries, with the intent of bringing the devices to the marketplace within the next 12 to 18 months.  "This can give them a very long storage life of years and years, by only activating when in use," Simon explained.
Ancient Pebbles Contain Evidence Of A Hotter World - SpaceDaily  Analysis of 3.2-billion-year-old pebbles has yielded perhaps the oldest geological evidence of Earth's ancient atmosphere and climate. The findings, published in the April 15 issue of the journal Nature, indicate that carbon dioxide levels in the early atmosphere were substantially above those that exist today and above those predicted by other models of the early Earth. The research implies that carbon dioxide, perhaps aided by another greenhouse gas such as methane, helped to keep the planet warm enough for life to form and evolve. 

Dr Raisman's research

Millions for stem cell research  - BBC  The government is to pump 16.5m into stem cell research to treat disease. A total of 57 grants have been awarded to universities across the UK looking at new treatments for conditions such as Parkinson's, diabetes and cancer. One project, by the National Institute of Medical Research in London, involves taking stem cells from the lining of the nose to repair spinal cord damage. The researchers, led by Dr Geoffrey Raisman, have already found that stem cells lining the nose have the ability to regenerate throughout life. They believe it is possible to harness this ability to graft them into damaged spinal areas to stimulate regeneration of the tissue. Trials in rats have produced promising results.

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