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A survey by the National Association of Realtors conducted in March 2011 revealed that 62 percent of people ages 18-29 said they would prefer to live in a communities with a mix of single family homes, condos and apartments, nearby retail shops, restaurants, cafes and bars, as well as workplaces, libraries, and schools served by public transportation.  A separate 2011 Urban Land Institute survey found that nearly two-thirds of 18 to 32-year-olds polled preferred to live in walkable communities. Younger Americans are also using technology to substitute for driving, connecting with friends and family online, substituting Facebook, Twitter, Skype, or FaceTime interactions for in-person visits and using online shopping and e-commerce in place of driving to and from grocery and retail stores, the report notes. For generations of Americans, car ownership was an almost mandatory rite of passage-a symbol of freedom and independence. For more and more young people today, a car is a burden they no longer wish to carry. 

What may be the world's largest chemistry experiment in history launched last week as part of the International Year of Chemistry 2011. The American Chemical Society (ACS) announced it will help support teachers and students who wish to participate in the experiment, "Water: A Chemical Solution," by sending volunteers to classrooms that need assistance.

The Belchatow power plant is seen in September 2011 in Poland. The world has just five years to avoid being trapped in a scenario of perilous climate change and extreme weather events, the International Energy Agency (IEA) warned

The 2011 Arctic sea ice extent maximum that marks the beginning of the melt season appears to be tied for the lowest ever measured by satellites, say scientists at the University of Colorado Boulder's National Snow and Ice Data Center.

If you thought 2010 was disruptive, wait until 2011. This year we saw major game-changers emerge -- the iPad, a flurry of mobile apps, the rise of social commerce, C-Suite fixation on enterprise social-media -- and more. This coming year we'll see even more dramatic change. Keep your eyes on the following

Collectively, malaria, TB & HIV/AIDS cause more than five million deaths per year - nearly the entire population of the state of Washington - and represent one of the world's major public health challenges as we move into the second decade of the 21st century. In the May 26, 2011, edition of scientific journal Nature, Seattle BioMed Director Alan Aderem, Ph.D., along with Rino Rappuoli, Ph.D., Global Head of Vaccines Research for Novartis Vaccines & Diagnostics, discuss recent advances in vaccine development, along with new tools including systems biology and structure-based antigen design that could lead to a deeper understanding of mechanisms of protection. This, in turn, will illuminate the path to rational vaccine development to lift the burden of the world's most devastating infectious diseases.

With today's crops, it would be possible to feed the 2050 global population of nine billion people. But agricultural land will have to be used optimally. And this demands solid economic and institutional preconditions. Food prices will probably eventually rise. This was discussed by Professor Martin van Ittersum on 12 May 2011 at the ceremony at which he accepted the post of Professor of Plant Production Systems with a personal chair at Wageningen University.

Scientists are monitoring a massive pool of fresh water in the Arctic Ocean that could spill into the Atlantic and potentially alter the ocean currents that bring Western Europe its moderate climate. The oceanographers said Tuesday April 5, 2011, the unusual accumulation has been caused by Siberian and Canadian rivers dumping more water into the Arctic, and from melting sea ice. Both are consequences of global warming.

The old saying there's plenty more fish in the sea might soon no longer apply to the Mediterranean, says Swiss-based International Union for Conservation of Nature. A study it is releasing Tuesday, April 19, 2011 says more than 40 species of marine fish there could soon disappear - almost half the species of sharks and rays and at least 12 species of bony fish are threatened with extinction due to overfishing, pollution and loss of habitat.

The Purdue Solar Racing team's solar-powered urban commuter car achieved the equivalent of almost 2,200 miles per gallon in the 2011 Shell EcoMarathon international competition this week in Houston.

According to a report released by Freedom House titled Freedom on the Net 2011, Iran is the worst country when it comes to online freedom.  The top three countries, in order, are Estonia, The United States and Germany. The study judged countries based on three specific criteria: Obstacles to internet access, limits on content and violations of user rights.  They assigned each country a numerical score based on those criteria.  Countries scoring from 0-30 are designated "free," countries scoring from 31-60 are designated "party free" and those with score of 61-100 are labelled "not free."

Following months of preliminary work on computer simulations, the first completed prototype of the new electric concept car from Technische Universitaet Muenchen showed in its first driving tests that it possesses excellent driving properties -- not only in theory, but also in practice. Technische Universitaet Muenchen will be presenting its new electric vehicle concept "MUTE" at the international motor show in Frankfurt from Sept. 15-25, 2011.

For the first time, the melting of glaciers in Greenland could now be measured with high accuracy from space. Just in time for the tenth anniversary of the twin satellites GRACE (Gravity Recovery and Climate Experiment) a sharp image has surface, which also renders the spatial distribution of the glacial melt more precisely. The Greenland ice shield had to cope with up to 240 gigatons of mass loss between 2002 and 2011. This corresponds to a sea level rise of about 0.7 mm per year. These statements were made possible by the high-precision measurements of the GRACE mission, whose data records result in a hitherto unequaled accurate picture of the earth's gravity. One of Newton's laws states that the gravity of an object depends directly on its mass. "When the mass of the Greenland ice sheet changes, so does the gravity there," explains Dr. Frank Flechtner from the GFZ German Research Centre for Geosciences. "The GRACE gravity field measurements therefore give us information on mass changes, including climate-related ones."

John Harrington Jr., professor of geography, is a synoptic climatologist who examines the factors behind distinctive weather events. He credits the increased tornado production this year to jet stream patterns in the upper atmosphere. The patterns have created synoptic events such as the April tornado outbreak in Alabama and recent tornado in Joplin, Mo. While these events are not unprecedented, they are significant, he said.

Technology for making an "artificial leaf" holds the potential for opening an era of "fast-food energy," in which people generate their own electricity at home with low-cost equipment perfect for the 3 billion people living in developing countries and even home-owners in the United States. That's among the prospects emerging from research on a new genre of "electrofuels" described in the current edition of Chemical & Engineering News, the American Chemical Society's weekly newsmagazine.

The threat to climate change posed by thawing permafrost, which could release stocks of stored carbon, is greater than estimated, a group of scientists said on Wednesday.

Illac Diaz (R) and Siplicio Mondas inspect a solar light bottle installed by Philippine soldiers in a shanty town in Manila. With the help of some plastic bottles plus a social media campaign, Diaz is aiming to help a million poor people in a year.

Declaring the eradication of polio will be far more difficult than it was for smallpox, according to a review published in the Journal of General Virology. Further research into the complex virus - host interactions and how the vaccine is used in the final stages of the eradication programme is crucial to its success.

Federal officials say the Arctic region has changed dramatically in the past five years - for the worse.

Scientists studying populations of gray wolves in the USA's Yellowstone National Park have developed a way to predict how changes in the environment will impact on the animals' number, body size and genetics, amongst other biological traits.