Science News Archive - April 21, 2009
Indigenous peoples from throughout the world gathered in Anchorage, Alaska, on Monday for discussions on the impact of global climate change on their native communities.
African nations are asking for billions to fight the threat of droughts, heat waves, and rising seas - all natural disasters they believe are imminent due to climate change.
Scientists at Harvard University have found that tropical cyclones readily inject ice far into the stratosphere, possibly feeding global warming.
The DNA of a mammalian cell is about two metres long if all base pairs were aligned in one string. To fit this genetic material in a nucleus of only a few microns diameter, the DNA is wrapped around millions of so-called histon proteins that are arranged like pearls on a string, leading to a 10,000-fold compaction of the DNA.
In a recent study, U.S. researchers have reprogrammed cells found in circulating blood into cells that are molecularly and functionally indistinguishable from embryonic stem cells, a revolutionary achievement that provides a readily accessible source of stem cells and an alternative to harvesting embryonic stem cells.
Research performed by Nicole Lauzon and Dr. Steven Laviolette of the Schulich School of Medicine & Dentistry at The University of Western Ontario has found key processes in the brain that control the emotional significance of our experiences and how we form memories of them.
Cambridge University said Tuesday that physicist Stephen Hawking's family expects him to recover fully from a chest infection that has left him hospitalized.
China will construct 20 additional reservoirs in the Yangtze River system by 2020, the government announced Tuesday, regardless of mounting concerns about dam construction in the area.
The National Aeronautics and Space Administration says it will fund a dozen proposals to help advance U.S.
When we emerge from a supermarket laden down with bags and faced with a sea of vehicles, how do we remember where we've parked our car and translate the memory into the correct action to get back there?
- To swell, as grain or wood with water.